diff --git a/auto_generated.go b/auto_generated.go
new file mode 100644
index 0000000..64c8e01
--- /dev/null
+++ b/auto_generated.go
@@ -0,0 +1,916 @@
+package envconf
+
+import "time"
+
+type mapEnvType [5]*keyLookupType
+
+func (c *Config) GetMapInt(key string) (empty map[string]int64) {
+	empty = make(map[string]int64)
+	retval := make(map[string]int64)
+	if c.parsed {
+		key = cleanKey(key)
+		v10, ok := c.mapEnv[0].next[key]
+		if ok {
+			for k11, v11 := range v10.next {
+				entry := c.env[v11.key]
+				if (entry.dtype.baseType() == TypeInt.baseType()) && (entry.parsed.err == nil) {
+					retval[k11] = entry.parsed.intval
+				} else {
+					return
+				}
+			}
+			return retval
+		}
+	}
+	return
+}
+func (c *Config) GetMapMetric(key string) (empty map[string]int64) {
+	empty = make(map[string]int64)
+	retval := make(map[string]int64)
+	if c.parsed {
+		key = cleanKey(key)
+		v10, ok := c.mapEnv[0].next[key]
+		if ok {
+			for k11, v11 := range v10.next {
+				entry := c.env[v11.key]
+				if (entry.dtype.baseType() == TypeMetric.baseType()) && (entry.parsed.err == nil) {
+					retval[k11] = entry.parsed.intval
+				} else {
+					return
+				}
+			}
+			return retval
+		}
+	}
+	return
+}
+func (c *Config) GetMapDuration(key string) (empty map[string]time.Duration) {
+	empty = make(map[string]time.Duration)
+	retval := make(map[string]time.Duration)
+	if c.parsed {
+		key = cleanKey(key)
+		v10, ok := c.mapEnv[0].next[key]
+		if ok {
+			for k11, v11 := range v10.next {
+				entry := c.env[v11.key]
+				if (entry.dtype.baseType() == TypeDuration.baseType()) && (entry.parsed.err == nil) {
+					retval[k11] = entry.parsed.durval
+				} else {
+					return
+				}
+			}
+			return retval
+		}
+	}
+	return
+}
+func (c *Config) GetMapString(key string) (empty map[string]string) {
+	empty = make(map[string]string)
+	retval := make(map[string]string)
+	if c.parsed {
+		key = cleanKey(key)
+		v10, ok := c.mapEnv[0].next[key]
+		if ok {
+			for k11, v11 := range v10.next {
+				entry := c.env[v11.key]
+				if (entry.dtype.baseType() == TypeString.baseType()) && (entry.parsed.err == nil) {
+					retval[k11] = entry.parsed.strval
+				} else {
+					return
+				}
+			}
+			return retval
+		}
+	}
+	return
+}
+func (c *Config) GetMapDirectory(key string) (empty map[string]string) {
+	empty = make(map[string]string)
+	retval := make(map[string]string)
+	if c.parsed {
+		key = cleanKey(key)
+		v10, ok := c.mapEnv[0].next[key]
+		if ok {
+			for k11, v11 := range v10.next {
+				entry := c.env[v11.key]
+				if (entry.dtype.baseType() == TypeDirectory.baseType()) && (entry.parsed.err == nil) {
+					retval[k11] = entry.parsed.strval
+				} else {
+					return
+				}
+			}
+			return retval
+		}
+	}
+	return
+}
+func (c *Config) GetMapBool(key string) (empty map[string]bool) {
+	empty = make(map[string]bool)
+	retval := make(map[string]bool)
+	if c.parsed {
+		key = cleanKey(key)
+		v10, ok := c.mapEnv[0].next[key]
+		if ok {
+			for k11, v11 := range v10.next {
+				entry := c.env[v11.key]
+				if (entry.dtype.baseType() == TypeBool.baseType()) && (entry.parsed.err == nil) {
+					retval[k11] = entry.parsed.boolval
+				} else {
+					return
+				}
+			}
+			return retval
+		}
+	}
+	return
+}
+func (c *Config) GetMapHex(key string) (empty map[string][]byte) {
+	empty = make(map[string][]byte)
+	retval := make(map[string][]byte)
+	if c.parsed {
+		key = cleanKey(key)
+		v10, ok := c.mapEnv[0].next[key]
+		if ok {
+			for k11, v11 := range v10.next {
+				entry := c.env[v11.key]
+				if (entry.dtype.baseType() == TypeHex.baseType()) && (entry.parsed.err == nil) {
+					retval[k11] = entry.parsed.binval
+				} else {
+					return
+				}
+			}
+			return retval
+		}
+	}
+	return
+}
+func (c *Config) GetMapMapInt(key string) (empty map[string]map[string]int64) {
+	empty = make(map[string]map[string]int64)
+	retval := make(map[string]map[string]int64)
+	if c.parsed {
+		key = cleanKey(key)
+		v10, ok := c.mapEnv[1].next[key]
+		if ok {
+			for k11, v11 := range v10.next {
+				retval[k11] = make(map[string]int64)
+				for k12, v12 := range v11.next {
+					entry := c.env[v12.key]
+					if (entry.dtype.baseType() == TypeInt.baseType()) && (entry.parsed.err == nil) {
+						retval[k11][k12] = entry.parsed.intval
+					} else {
+						return
+					}
+				}
+			}
+			return retval
+		}
+	}
+	return
+}
+func (c *Config) GetMapMapMetric(key string) (empty map[string]map[string]int64) {
+	empty = make(map[string]map[string]int64)
+	retval := make(map[string]map[string]int64)
+	if c.parsed {
+		key = cleanKey(key)
+		v10, ok := c.mapEnv[1].next[key]
+		if ok {
+			for k11, v11 := range v10.next {
+				retval[k11] = make(map[string]int64)
+				for k12, v12 := range v11.next {
+					entry := c.env[v12.key]
+					if (entry.dtype.baseType() == TypeMetric.baseType()) && (entry.parsed.err == nil) {
+						retval[k11][k12] = entry.parsed.intval
+					} else {
+						return
+					}
+				}
+			}
+			return retval
+		}
+	}
+	return
+}
+func (c *Config) GetMapMapDuration(key string) (empty map[string]map[string]time.Duration) {
+	empty = make(map[string]map[string]time.Duration)
+	retval := make(map[string]map[string]time.Duration)
+	if c.parsed {
+		key = cleanKey(key)
+		v10, ok := c.mapEnv[1].next[key]
+		if ok {
+			for k11, v11 := range v10.next {
+				retval[k11] = make(map[string]time.Duration)
+				for k12, v12 := range v11.next {
+					entry := c.env[v12.key]
+					if (entry.dtype.baseType() == TypeDuration.baseType()) && (entry.parsed.err == nil) {
+						retval[k11][k12] = entry.parsed.durval
+					} else {
+						return
+					}
+				}
+			}
+			return retval
+		}
+	}
+	return
+}
+func (c *Config) GetMapMapString(key string) (empty map[string]map[string]string) {
+	empty = make(map[string]map[string]string)
+	retval := make(map[string]map[string]string)
+	if c.parsed {
+		key = cleanKey(key)
+		v10, ok := c.mapEnv[1].next[key]
+		if ok {
+			for k11, v11 := range v10.next {
+				retval[k11] = make(map[string]string)
+				for k12, v12 := range v11.next {
+					entry := c.env[v12.key]
+					if (entry.dtype.baseType() == TypeString.baseType()) && (entry.parsed.err == nil) {
+						retval[k11][k12] = entry.parsed.strval
+					} else {
+						return
+					}
+				}
+			}
+			return retval
+		}
+	}
+	return
+}
+func (c *Config) GetMapMapDirectory(key string) (empty map[string]map[string]string) {
+	empty = make(map[string]map[string]string)
+	retval := make(map[string]map[string]string)
+	if c.parsed {
+		key = cleanKey(key)
+		v10, ok := c.mapEnv[1].next[key]
+		if ok {
+			for k11, v11 := range v10.next {
+				retval[k11] = make(map[string]string)
+				for k12, v12 := range v11.next {
+					entry := c.env[v12.key]
+					if (entry.dtype.baseType() == TypeDirectory.baseType()) && (entry.parsed.err == nil) {
+						retval[k11][k12] = entry.parsed.strval
+					} else {
+						return
+					}
+				}
+			}
+			return retval
+		}
+	}
+	return
+}
+func (c *Config) GetMapMapBool(key string) (empty map[string]map[string]bool) {
+	empty = make(map[string]map[string]bool)
+	retval := make(map[string]map[string]bool)
+	if c.parsed {
+		key = cleanKey(key)
+		v10, ok := c.mapEnv[1].next[key]
+		if ok {
+			for k11, v11 := range v10.next {
+				retval[k11] = make(map[string]bool)
+				for k12, v12 := range v11.next {
+					entry := c.env[v12.key]
+					if (entry.dtype.baseType() == TypeBool.baseType()) && (entry.parsed.err == nil) {
+						retval[k11][k12] = entry.parsed.boolval
+					} else {
+						return
+					}
+				}
+			}
+			return retval
+		}
+	}
+	return
+}
+func (c *Config) GetMapMapHex(key string) (empty map[string]map[string][]byte) {
+	empty = make(map[string]map[string][]byte)
+	retval := make(map[string]map[string][]byte)
+	if c.parsed {
+		key = cleanKey(key)
+		v10, ok := c.mapEnv[1].next[key]
+		if ok {
+			for k11, v11 := range v10.next {
+				retval[k11] = make(map[string][]byte)
+				for k12, v12 := range v11.next {
+					entry := c.env[v12.key]
+					if (entry.dtype.baseType() == TypeHex.baseType()) && (entry.parsed.err == nil) {
+						retval[k11][k12] = entry.parsed.binval
+					} else {
+						return
+					}
+				}
+			}
+			return retval
+		}
+	}
+	return
+}
+func (c *Config) GetMapMapMapInt(key string) (empty map[string]map[string]map[string]int64) {
+	empty = make(map[string]map[string]map[string]int64)
+	retval := make(map[string]map[string]map[string]int64)
+	if c.parsed {
+		key = cleanKey(key)
+		v10, ok := c.mapEnv[2].next[key]
+		if ok {
+			for k11, v11 := range v10.next {
+				retval[k11] = make(map[string]map[string]int64)
+				for k12, v12 := range v11.next {
+					retval[k11][k12] = make(map[string]int64)
+					for k13, v13 := range v12.next {
+						entry := c.env[v13.key]
+						if (entry.dtype.baseType() == TypeInt.baseType()) && (entry.parsed.err == nil) {
+							retval[k11][k12][k13] = entry.parsed.intval
+						} else {
+							return
+						}
+					}
+				}
+			}
+			return retval
+		}
+	}
+	return
+}
+func (c *Config) GetMapMapMapMetric(key string) (empty map[string]map[string]map[string]int64) {
+	empty = make(map[string]map[string]map[string]int64)
+	retval := make(map[string]map[string]map[string]int64)
+	if c.parsed {
+		key = cleanKey(key)
+		v10, ok := c.mapEnv[2].next[key]
+		if ok {
+			for k11, v11 := range v10.next {
+				retval[k11] = make(map[string]map[string]int64)
+				for k12, v12 := range v11.next {
+					retval[k11][k12] = make(map[string]int64)
+					for k13, v13 := range v12.next {
+						entry := c.env[v13.key]
+						if (entry.dtype.baseType() == TypeMetric.baseType()) && (entry.parsed.err == nil) {
+							retval[k11][k12][k13] = entry.parsed.intval
+						} else {
+							return
+						}
+					}
+				}
+			}
+			return retval
+		}
+	}
+	return
+}
+func (c *Config) GetMapMapMapDuration(key string) (empty map[string]map[string]map[string]time.Duration) {
+	empty = make(map[string]map[string]map[string]time.Duration)
+	retval := make(map[string]map[string]map[string]time.Duration)
+	if c.parsed {
+		key = cleanKey(key)
+		v10, ok := c.mapEnv[2].next[key]
+		if ok {
+			for k11, v11 := range v10.next {
+				retval[k11] = make(map[string]map[string]time.Duration)
+				for k12, v12 := range v11.next {
+					retval[k11][k12] = make(map[string]time.Duration)
+					for k13, v13 := range v12.next {
+						entry := c.env[v13.key]
+						if (entry.dtype.baseType() == TypeDuration.baseType()) && (entry.parsed.err == nil) {
+							retval[k11][k12][k13] = entry.parsed.durval
+						} else {
+							return
+						}
+					}
+				}
+			}
+			return retval
+		}
+	}
+	return
+}
+func (c *Config) GetMapMapMapString(key string) (empty map[string]map[string]map[string]string) {
+	empty = make(map[string]map[string]map[string]string)
+	retval := make(map[string]map[string]map[string]string)
+	if c.parsed {
+		key = cleanKey(key)
+		v10, ok := c.mapEnv[2].next[key]
+		if ok {
+			for k11, v11 := range v10.next {
+				retval[k11] = make(map[string]map[string]string)
+				for k12, v12 := range v11.next {
+					retval[k11][k12] = make(map[string]string)
+					for k13, v13 := range v12.next {
+						entry := c.env[v13.key]
+						if (entry.dtype.baseType() == TypeString.baseType()) && (entry.parsed.err == nil) {
+							retval[k11][k12][k13] = entry.parsed.strval
+						} else {
+							return
+						}
+					}
+				}
+			}
+			return retval
+		}
+	}
+	return
+}
+func (c *Config) GetMapMapMapDirectory(key string) (empty map[string]map[string]map[string]string) {
+	empty = make(map[string]map[string]map[string]string)
+	retval := make(map[string]map[string]map[string]string)
+	if c.parsed {
+		key = cleanKey(key)
+		v10, ok := c.mapEnv[2].next[key]
+		if ok {
+			for k11, v11 := range v10.next {
+				retval[k11] = make(map[string]map[string]string)
+				for k12, v12 := range v11.next {
+					retval[k11][k12] = make(map[string]string)
+					for k13, v13 := range v12.next {
+						entry := c.env[v13.key]
+						if (entry.dtype.baseType() == TypeDirectory.baseType()) && (entry.parsed.err == nil) {
+							retval[k11][k12][k13] = entry.parsed.strval
+						} else {
+							return
+						}
+					}
+				}
+			}
+			return retval
+		}
+	}
+	return
+}
+func (c *Config) GetMapMapMapBool(key string) (empty map[string]map[string]map[string]bool) {
+	empty = make(map[string]map[string]map[string]bool)
+	retval := make(map[string]map[string]map[string]bool)
+	if c.parsed {
+		key = cleanKey(key)
+		v10, ok := c.mapEnv[2].next[key]
+		if ok {
+			for k11, v11 := range v10.next {
+				retval[k11] = make(map[string]map[string]bool)
+				for k12, v12 := range v11.next {
+					retval[k11][k12] = make(map[string]bool)
+					for k13, v13 := range v12.next {
+						entry := c.env[v13.key]
+						if (entry.dtype.baseType() == TypeBool.baseType()) && (entry.parsed.err == nil) {
+							retval[k11][k12][k13] = entry.parsed.boolval
+						} else {
+							return
+						}
+					}
+				}
+			}
+			return retval
+		}
+	}
+	return
+}
+func (c *Config) GetMapMapMapHex(key string) (empty map[string]map[string]map[string][]byte) {
+	empty = make(map[string]map[string]map[string][]byte)
+	retval := make(map[string]map[string]map[string][]byte)
+	if c.parsed {
+		key = cleanKey(key)
+		v10, ok := c.mapEnv[2].next[key]
+		if ok {
+			for k11, v11 := range v10.next {
+				retval[k11] = make(map[string]map[string][]byte)
+				for k12, v12 := range v11.next {
+					retval[k11][k12] = make(map[string][]byte)
+					for k13, v13 := range v12.next {
+						entry := c.env[v13.key]
+						if (entry.dtype.baseType() == TypeHex.baseType()) && (entry.parsed.err == nil) {
+							retval[k11][k12][k13] = entry.parsed.binval
+						} else {
+							return
+						}
+					}
+				}
+			}
+			return retval
+		}
+	}
+	return
+}
+func (c *Config) GetMapMapMapMapInt(key string) (empty map[string]map[string]map[string]map[string]int64) {
+	empty = make(map[string]map[string]map[string]map[string]int64)
+	retval := make(map[string]map[string]map[string]map[string]int64)
+	if c.parsed {
+		key = cleanKey(key)
+		v10, ok := c.mapEnv[3].next[key]
+		if ok {
+			for k11, v11 := range v10.next {
+				retval[k11] = make(map[string]map[string]map[string]int64)
+				for k12, v12 := range v11.next {
+					retval[k11][k12] = make(map[string]map[string]int64)
+					for k13, v13 := range v12.next {
+						retval[k11][k12][k13] = make(map[string]int64)
+						for k14, v14 := range v13.next {
+							entry := c.env[v14.key]
+							if (entry.dtype.baseType() == TypeInt.baseType()) && (entry.parsed.err == nil) {
+								retval[k11][k12][k13][k14] = entry.parsed.intval
+							} else {
+								return
+							}
+						}
+					}
+				}
+			}
+			return retval
+		}
+	}
+	return
+}
+func (c *Config) GetMapMapMapMapMetric(key string) (empty map[string]map[string]map[string]map[string]int64) {
+	empty = make(map[string]map[string]map[string]map[string]int64)
+	retval := make(map[string]map[string]map[string]map[string]int64)
+	if c.parsed {
+		key = cleanKey(key)
+		v10, ok := c.mapEnv[3].next[key]
+		if ok {
+			for k11, v11 := range v10.next {
+				retval[k11] = make(map[string]map[string]map[string]int64)
+				for k12, v12 := range v11.next {
+					retval[k11][k12] = make(map[string]map[string]int64)
+					for k13, v13 := range v12.next {
+						retval[k11][k12][k13] = make(map[string]int64)
+						for k14, v14 := range v13.next {
+							entry := c.env[v14.key]
+							if (entry.dtype.baseType() == TypeMetric.baseType()) && (entry.parsed.err == nil) {
+								retval[k11][k12][k13][k14] = entry.parsed.intval
+							} else {
+								return
+							}
+						}
+					}
+				}
+			}
+			return retval
+		}
+	}
+	return
+}
+func (c *Config) GetMapMapMapMapDuration(key string) (empty map[string]map[string]map[string]map[string]time.Duration) {
+	empty = make(map[string]map[string]map[string]map[string]time.Duration)
+	retval := make(map[string]map[string]map[string]map[string]time.Duration)
+	if c.parsed {
+		key = cleanKey(key)
+		v10, ok := c.mapEnv[3].next[key]
+		if ok {
+			for k11, v11 := range v10.next {
+				retval[k11] = make(map[string]map[string]map[string]time.Duration)
+				for k12, v12 := range v11.next {
+					retval[k11][k12] = make(map[string]map[string]time.Duration)
+					for k13, v13 := range v12.next {
+						retval[k11][k12][k13] = make(map[string]time.Duration)
+						for k14, v14 := range v13.next {
+							entry := c.env[v14.key]
+							if (entry.dtype.baseType() == TypeDuration.baseType()) && (entry.parsed.err == nil) {
+								retval[k11][k12][k13][k14] = entry.parsed.durval
+							} else {
+								return
+							}
+						}
+					}
+				}
+			}
+			return retval
+		}
+	}
+	return
+}
+func (c *Config) GetMapMapMapMapString(key string) (empty map[string]map[string]map[string]map[string]string) {
+	empty = make(map[string]map[string]map[string]map[string]string)
+	retval := make(map[string]map[string]map[string]map[string]string)
+	if c.parsed {
+		key = cleanKey(key)
+		v10, ok := c.mapEnv[3].next[key]
+		if ok {
+			for k11, v11 := range v10.next {
+				retval[k11] = make(map[string]map[string]map[string]string)
+				for k12, v12 := range v11.next {
+					retval[k11][k12] = make(map[string]map[string]string)
+					for k13, v13 := range v12.next {
+						retval[k11][k12][k13] = make(map[string]string)
+						for k14, v14 := range v13.next {
+							entry := c.env[v14.key]
+							if (entry.dtype.baseType() == TypeString.baseType()) && (entry.parsed.err == nil) {
+								retval[k11][k12][k13][k14] = entry.parsed.strval
+							} else {
+								return
+							}
+						}
+					}
+				}
+			}
+			return retval
+		}
+	}
+	return
+}
+func (c *Config) GetMapMapMapMapDirectory(key string) (empty map[string]map[string]map[string]map[string]string) {
+	empty = make(map[string]map[string]map[string]map[string]string)
+	retval := make(map[string]map[string]map[string]map[string]string)
+	if c.parsed {
+		key = cleanKey(key)
+		v10, ok := c.mapEnv[3].next[key]
+		if ok {
+			for k11, v11 := range v10.next {
+				retval[k11] = make(map[string]map[string]map[string]string)
+				for k12, v12 := range v11.next {
+					retval[k11][k12] = make(map[string]map[string]string)
+					for k13, v13 := range v12.next {
+						retval[k11][k12][k13] = make(map[string]string)
+						for k14, v14 := range v13.next {
+							entry := c.env[v14.key]
+							if (entry.dtype.baseType() == TypeDirectory.baseType()) && (entry.parsed.err == nil) {
+								retval[k11][k12][k13][k14] = entry.parsed.strval
+							} else {
+								return
+							}
+						}
+					}
+				}
+			}
+			return retval
+		}
+	}
+	return
+}
+func (c *Config) GetMapMapMapMapBool(key string) (empty map[string]map[string]map[string]map[string]bool) {
+	empty = make(map[string]map[string]map[string]map[string]bool)
+	retval := make(map[string]map[string]map[string]map[string]bool)
+	if c.parsed {
+		key = cleanKey(key)
+		v10, ok := c.mapEnv[3].next[key]
+		if ok {
+			for k11, v11 := range v10.next {
+				retval[k11] = make(map[string]map[string]map[string]bool)
+				for k12, v12 := range v11.next {
+					retval[k11][k12] = make(map[string]map[string]bool)
+					for k13, v13 := range v12.next {
+						retval[k11][k12][k13] = make(map[string]bool)
+						for k14, v14 := range v13.next {
+							entry := c.env[v14.key]
+							if (entry.dtype.baseType() == TypeBool.baseType()) && (entry.parsed.err == nil) {
+								retval[k11][k12][k13][k14] = entry.parsed.boolval
+							} else {
+								return
+							}
+						}
+					}
+				}
+			}
+			return retval
+		}
+	}
+	return
+}
+func (c *Config) GetMapMapMapMapHex(key string) (empty map[string]map[string]map[string]map[string][]byte) {
+	empty = make(map[string]map[string]map[string]map[string][]byte)
+	retval := make(map[string]map[string]map[string]map[string][]byte)
+	if c.parsed {
+		key = cleanKey(key)
+		v10, ok := c.mapEnv[3].next[key]
+		if ok {
+			for k11, v11 := range v10.next {
+				retval[k11] = make(map[string]map[string]map[string][]byte)
+				for k12, v12 := range v11.next {
+					retval[k11][k12] = make(map[string]map[string][]byte)
+					for k13, v13 := range v12.next {
+						retval[k11][k12][k13] = make(map[string][]byte)
+						for k14, v14 := range v13.next {
+							entry := c.env[v14.key]
+							if (entry.dtype.baseType() == TypeHex.baseType()) && (entry.parsed.err == nil) {
+								retval[k11][k12][k13][k14] = entry.parsed.binval
+							} else {
+								return
+							}
+						}
+					}
+				}
+			}
+			return retval
+		}
+	}
+	return
+}
+func (c *Config) GetMapMapMapMapMapInt(key string) (empty map[string]map[string]map[string]map[string]map[string]int64) {
+	empty = make(map[string]map[string]map[string]map[string]map[string]int64)
+	retval := make(map[string]map[string]map[string]map[string]map[string]int64)
+	if c.parsed {
+		key = cleanKey(key)
+		v10, ok := c.mapEnv[4].next[key]
+		if ok {
+			for k11, v11 := range v10.next {
+				retval[k11] = make(map[string]map[string]map[string]map[string]int64)
+				for k12, v12 := range v11.next {
+					retval[k11][k12] = make(map[string]map[string]map[string]int64)
+					for k13, v13 := range v12.next {
+						retval[k11][k12][k13] = make(map[string]map[string]int64)
+						for k14, v14 := range v13.next {
+							retval[k11][k12][k13][k14] = make(map[string]int64)
+							for k15, v15 := range v14.next {
+								entry := c.env[v15.key]
+								if (entry.dtype.baseType() == TypeInt.baseType()) && (entry.parsed.err == nil) {
+									retval[k11][k12][k13][k14][k15] = entry.parsed.intval
+								} else {
+									return
+								}
+							}
+						}
+					}
+				}
+			}
+			return retval
+		}
+	}
+	return
+}
+func (c *Config) GetMapMapMapMapMapMetric(key string) (empty map[string]map[string]map[string]map[string]map[string]int64) {
+	empty = make(map[string]map[string]map[string]map[string]map[string]int64)
+	retval := make(map[string]map[string]map[string]map[string]map[string]int64)
+	if c.parsed {
+		key = cleanKey(key)
+		v10, ok := c.mapEnv[4].next[key]
+		if ok {
+			for k11, v11 := range v10.next {
+				retval[k11] = make(map[string]map[string]map[string]map[string]int64)
+				for k12, v12 := range v11.next {
+					retval[k11][k12] = make(map[string]map[string]map[string]int64)
+					for k13, v13 := range v12.next {
+						retval[k11][k12][k13] = make(map[string]map[string]int64)
+						for k14, v14 := range v13.next {
+							retval[k11][k12][k13][k14] = make(map[string]int64)
+							for k15, v15 := range v14.next {
+								entry := c.env[v15.key]
+								if (entry.dtype.baseType() == TypeMetric.baseType()) && (entry.parsed.err == nil) {
+									retval[k11][k12][k13][k14][k15] = entry.parsed.intval
+								} else {
+									return
+								}
+							}
+						}
+					}
+				}
+			}
+			return retval
+		}
+	}
+	return
+}
+func (c *Config) GetMapMapMapMapMapDuration(key string) (empty map[string]map[string]map[string]map[string]map[string]time.Duration) {
+	empty = make(map[string]map[string]map[string]map[string]map[string]time.Duration)
+	retval := make(map[string]map[string]map[string]map[string]map[string]time.Duration)
+	if c.parsed {
+		key = cleanKey(key)
+		v10, ok := c.mapEnv[4].next[key]
+		if ok {
+			for k11, v11 := range v10.next {
+				retval[k11] = make(map[string]map[string]map[string]map[string]time.Duration)
+				for k12, v12 := range v11.next {
+					retval[k11][k12] = make(map[string]map[string]map[string]time.Duration)
+					for k13, v13 := range v12.next {
+						retval[k11][k12][k13] = make(map[string]map[string]time.Duration)
+						for k14, v14 := range v13.next {
+							retval[k11][k12][k13][k14] = make(map[string]time.Duration)
+							for k15, v15 := range v14.next {
+								entry := c.env[v15.key]
+								if (entry.dtype.baseType() == TypeDuration.baseType()) && (entry.parsed.err == nil) {
+									retval[k11][k12][k13][k14][k15] = entry.parsed.durval
+								} else {
+									return
+								}
+							}
+						}
+					}
+				}
+			}
+			return retval
+		}
+	}
+	return
+}
+func (c *Config) GetMapMapMapMapMapString(key string) (empty map[string]map[string]map[string]map[string]map[string]string) {
+	empty = make(map[string]map[string]map[string]map[string]map[string]string)
+	retval := make(map[string]map[string]map[string]map[string]map[string]string)
+	if c.parsed {
+		key = cleanKey(key)
+		v10, ok := c.mapEnv[4].next[key]
+		if ok {
+			for k11, v11 := range v10.next {
+				retval[k11] = make(map[string]map[string]map[string]map[string]string)
+				for k12, v12 := range v11.next {
+					retval[k11][k12] = make(map[string]map[string]map[string]string)
+					for k13, v13 := range v12.next {
+						retval[k11][k12][k13] = make(map[string]map[string]string)
+						for k14, v14 := range v13.next {
+							retval[k11][k12][k13][k14] = make(map[string]string)
+							for k15, v15 := range v14.next {
+								entry := c.env[v15.key]
+								if (entry.dtype.baseType() == TypeString.baseType()) && (entry.parsed.err == nil) {
+									retval[k11][k12][k13][k14][k15] = entry.parsed.strval
+								} else {
+									return
+								}
+							}
+						}
+					}
+				}
+			}
+			return retval
+		}
+	}
+	return
+}
+func (c *Config) GetMapMapMapMapMapDirectory(key string) (empty map[string]map[string]map[string]map[string]map[string]string) {
+	empty = make(map[string]map[string]map[string]map[string]map[string]string)
+	retval := make(map[string]map[string]map[string]map[string]map[string]string)
+	if c.parsed {
+		key = cleanKey(key)
+		v10, ok := c.mapEnv[4].next[key]
+		if ok {
+			for k11, v11 := range v10.next {
+				retval[k11] = make(map[string]map[string]map[string]map[string]string)
+				for k12, v12 := range v11.next {
+					retval[k11][k12] = make(map[string]map[string]map[string]string)
+					for k13, v13 := range v12.next {
+						retval[k11][k12][k13] = make(map[string]map[string]string)
+						for k14, v14 := range v13.next {
+							retval[k11][k12][k13][k14] = make(map[string]string)
+							for k15, v15 := range v14.next {
+								entry := c.env[v15.key]
+								if (entry.dtype.baseType() == TypeDirectory.baseType()) && (entry.parsed.err == nil) {
+									retval[k11][k12][k13][k14][k15] = entry.parsed.strval
+								} else {
+									return
+								}
+							}
+						}
+					}
+				}
+			}
+			return retval
+		}
+	}
+	return
+}
+func (c *Config) GetMapMapMapMapMapBool(key string) (empty map[string]map[string]map[string]map[string]map[string]bool) {
+	empty = make(map[string]map[string]map[string]map[string]map[string]bool)
+	retval := make(map[string]map[string]map[string]map[string]map[string]bool)
+	if c.parsed {
+		key = cleanKey(key)
+		v10, ok := c.mapEnv[4].next[key]
+		if ok {
+			for k11, v11 := range v10.next {
+				retval[k11] = make(map[string]map[string]map[string]map[string]bool)
+				for k12, v12 := range v11.next {
+					retval[k11][k12] = make(map[string]map[string]map[string]bool)
+					for k13, v13 := range v12.next {
+						retval[k11][k12][k13] = make(map[string]map[string]bool)
+						for k14, v14 := range v13.next {
+							retval[k11][k12][k13][k14] = make(map[string]bool)
+							for k15, v15 := range v14.next {
+								entry := c.env[v15.key]
+								if (entry.dtype.baseType() == TypeBool.baseType()) && (entry.parsed.err == nil) {
+									retval[k11][k12][k13][k14][k15] = entry.parsed.boolval
+								} else {
+									return
+								}
+							}
+						}
+					}
+				}
+			}
+			return retval
+		}
+	}
+	return
+}
+func (c *Config) GetMapMapMapMapMapHex(key string) (empty map[string]map[string]map[string]map[string]map[string][]byte) {
+	empty = make(map[string]map[string]map[string]map[string]map[string][]byte)
+	retval := make(map[string]map[string]map[string]map[string]map[string][]byte)
+	if c.parsed {
+		key = cleanKey(key)
+		v10, ok := c.mapEnv[4].next[key]
+		if ok {
+			for k11, v11 := range v10.next {
+				retval[k11] = make(map[string]map[string]map[string]map[string][]byte)
+				for k12, v12 := range v11.next {
+					retval[k11][k12] = make(map[string]map[string]map[string][]byte)
+					for k13, v13 := range v12.next {
+						retval[k11][k12][k13] = make(map[string]map[string][]byte)
+						for k14, v14 := range v13.next {
+							retval[k11][k12][k13][k14] = make(map[string][]byte)
+							for k15, v15 := range v14.next {
+								entry := c.env[v15.key]
+								if (entry.dtype.baseType() == TypeHex.baseType()) && (entry.parsed.err == nil) {
+									retval[k11][k12][k13][k14][k15] = entry.parsed.binval
+								} else {
+									return
+								}
+							}
+						}
+					}
+				}
+			}
+			return retval
+		}
+	}
+	return
+}
diff --git a/envconf.go b/envconf.go
index f606437..1875770 100644
--- a/envconf.go
+++ b/envconf.go
@@ -31,9 +31,15 @@ func (kl *keyLookupType) setKey(parts []string, key string) {
 		kl.next = make(map[string]*keyLookupType)
 	}
 	if len(parts) > 0 {
-		nextLookup := new(keyLookupType)
-		nextLookup.setKey(parts[1:], key)
-		kl.next[parts[0]] = nextLookup
+		firstPart := parts[0]
+		nextLookup, ok := kl.next[firstPart]
+		if ok {
+			nextLookup.setKey(parts[1:], key)
+		} else {
+			nextLookup := new(keyLookupType)
+			nextLookup.setKey(parts[1:], key)
+			kl.next[firstPart] = nextLookup
+		}
 	} else {
 		kl.key = key
 		kl.end = true
@@ -52,12 +58,10 @@ func (kl *keyLookupType) print() {
 	}
 }
 
-type mapEnvType [5]*keyLookupType
-
 type Config struct {
 	parsed bool
 	env    map[string]cEntry
-	mapEnv mapEnvType
+	mapEnv *mapEnvType
 }
 
 // NewConfig returns an envconf.Config that is used to read configuration from environment variables.
@@ -67,6 +71,8 @@ func NewConfig() *Config {
 	config := new(Config)
 	config.parsed = false
 	config.env = make(map[string]cEntry)
+
+	config.mapEnv = new(mapEnvType)
 	for level, _ := range config.mapEnv {
 		config.mapEnv[level] = new(keyLookupType)
 	}
@@ -76,7 +82,10 @@ func NewConfig() *Config {
 		if len(splitted) == 2 {
 			key := cleanKey(splitted[0])
 			val := splitted[1]
-			splitted = append(strings.Split(key, "_"), make([]string, len(config.mapEnv), len(config.mapEnv))...)
+
+			splitted = strings.Split(key, "_")
+			maxParts := len(splitted)
+			splitted = append(splitted, make([]string, len(config.mapEnv), len(config.mapEnv))...)
 			if unicode.IsLetter(getFirstRune(key)) {
 				var entry cEntry
 				entry.value = val
@@ -85,25 +94,18 @@ func NewConfig() *Config {
 				entry.empty = false
 				config.env[key] = entry
 				if len(splitted) > 1 {
-					for level := 1; level <= len(config.mapEnv); level++ {
-						for count := 0; count < level; count++ {
-							parts := make([]string, level, level)
-							parts[0] = strings.Trim(strings.Join(splitted[:count+1], "_"), "_")
+					for level := 0; level < len(config.mapEnv); level++ {
+						for count := 0; count < maxParts-1-level; count++ {
+							parts := make([]string, level+2, level+2)
+							lastSplit := len(parts) - 1 + count
+
 							for partPos, _ := range parts {
-								if partPos > 0 {
-									if partPos+1 == len(parts) {
-										parts[partPos] = strings.Trim(strings.Join(splitted[partPos+count:], "_"), "_")
-									} else {
-										parts[partPos] = splitted[partPos+count]
-									}
-								}
-							}
-							if parts[len(parts)-1] == "" {
-								break
+								parts[partPos] = splitted[partPos+count]
 							}
+							parts[0] = strings.Trim(strings.Join(splitted[:count+1], "_"), "_")
+							parts[len(parts)-1] = strings.Trim(strings.Join(splitted[lastSplit:], "_"), "_")
 							config.mapEnv[level].setKey(parts, key)
 						}
-						config.mapEnv[level].print()
 					}
 				}
 			}
@@ -329,146 +331,6 @@ func (c *Config) getRaw(key string, dtype DataType) (val cValue) {
 	return
 }
 
-func (c *Config) getRawMap(key string, dtype DataType) (empty map[string]cValue) {
-	empty = make(map[string]cValue)
-	retval := make(map[string]cValue)
-	if c.parsed {
-		key = cleanKey(key)
-		entries, ok := c.mapEnv[0].next[key]
-
-		if ok {
-			for k, v := range entries.next {
-				entry := c.env[v.key]
-				if (entry.dtype.baseType() == dtype.baseType()) && (entry.parsed.err == nil) {
-					retval[k] = entry.parsed
-				} else {
-					return
-				}
-			}
-			return retval
-		}
-	}
-	return
-}
-
-func (c *Config) getRawMapMap(key string, dtype DataType) (empty map[string]map[string]cValue) {
-	empty = make(map[string]map[string]cValue)
-	retval := make(map[string]map[string]cValue)
-	if c.parsed {
-		key = cleanKey(key)
-		entries, ok := c.mapMapEnv[key]
-
-		if ok {
-			for k1, v1 := range entries {
-				retval[k1] = make(map[string]cValue)
-				for k2, v2 := range v1 {
-					entry := c.env[v2]
-					if (entry.dtype.baseType() == dtype.baseType()) && (entry.parsed.err == nil) {
-						retval[k1][k2] = entry.parsed
-					} else {
-						return
-					}
-				}
-			}
-			return retval
-		}
-	}
-	return
-}
-
-func (c *Config) getRawMapMapMap(key string, dtype DataType) (empty map[string]map[string]map[string]cValue) {
-	empty = make(map[string]map[string]map[string]cValue)
-	retval := make(map[string]map[string]map[string]cValue)
-	if c.parsed {
-		key = cleanKey(key)
-		entries, ok := c.mapMapMapEnv[key]
-
-		if ok {
-			for k1, v1 := range entries {
-				retval[k1] = make(map[string]map[string]cValue)
-				for k2, v2 := range v1 {
-					retval[k1][k2] = make(map[string]cValue)
-					for k3, v3 := range v2 {
-						entry := c.env[v3]
-						if (entry.dtype.baseType() == dtype.baseType()) && (entry.parsed.err == nil) {
-							retval[k1][k2][k3] = entry.parsed
-						} else {
-							return
-						}
-					}
-				}
-			}
-			return retval
-		}
-	}
-	return
-}
-
-func (c *Config) getRawMapMapMapMap(key string, dtype DataType) (empty map[string]map[string]map[string]map[string]cValue) {
-	empty = make(map[string]map[string]map[string]map[string]cValue)
-	retval := make(map[string]map[string]map[string]map[string]cValue)
-	if c.parsed {
-		key = cleanKey(key)
-		entries, ok := c.mapMapMapMapEnv[key]
-
-		if ok {
-			for k1, v1 := range entries {
-				retval[k1] = make(map[string]map[string]map[string]cValue)
-				for k2, v2 := range v1 {
-					retval[k1][k2] = make(map[string]map[string]cValue)
-					for k3, v3 := range v2 {
-						retval[k1][k2][k3] = make(map[string]cValue)
-						for k4, v4 := range v3 {
-							entry := c.env[v4]
-							if (entry.dtype.baseType() == dtype.baseType()) && (entry.parsed.err == nil) {
-								retval[k1][k2][k3][k4] = entry.parsed
-							} else {
-								return
-							}
-						}
-					}
-				}
-			}
-			return retval
-		}
-	}
-	return
-}
-
-func (c *Config) getRawMapMapMapMapMap(key string, dtype DataType) (empty map[string]map[string]map[string]map[string]map[string]cValue) {
-	empty = make(map[string]map[string]map[string]map[string]map[string]cValue)
-	retval := make(map[string]map[string]map[string]map[string]map[string]cValue)
-	if c.parsed {
-		key = cleanKey(key)
-		entries, ok := c.mapMapMapMapMapEnv[key]
-
-		if ok {
-			for k1, v1 := range entries {
-				retval[k1] = make(map[string]map[string]map[string]map[string]cValue)
-				for k2, v2 := range v1 {
-					retval[k1][k2] = make(map[string]map[string]map[string]cValue)
-					for k3, v3 := range v2 {
-						retval[k1][k2][k3] = make(map[string]map[string]cValue)
-						for k4, v4 := range v3 {
-							retval[k1][k2][k3][k4] = make(map[string]cValue)
-							for k5, v5 := range v4 {
-								entry := c.env[v5]
-								if (entry.dtype.baseType() == dtype.baseType()) && (entry.parsed.err == nil) {
-									retval[k1][k2][k3][k4][k5] = entry.parsed
-								} else {
-									return
-								}
-							}
-						}
-					}
-				}
-			}
-			return retval
-		}
-	}
-	return
-}
-
 // Returns the value of an environment variable.
 // If the variable is not defined as envconf.TypeInt the function will return 0.
 func (c *Config) GetInt(key string) int64 {
@@ -522,356 +384,6 @@ func (c *Config) GetBool(key string) bool {
 	return val.boolval
 }
 
-func (c *Config) GetMapInt(key string) (retval map[string]int64) {
-	retval = make(map[string]int64)
-	for k, v := range c.getRawMap(key, TypeInt) {
-		retval[k] = v.intval
-	}
-	return
-}
-
-func (c *Config) GetMapDuration(key string) (retval map[string]time.Duration) {
-	retval = make(map[string]time.Duration)
-	for k, v := range c.getRawMap(key, TypeDuration) {
-		retval[k] = v.durval
-	}
-	return
-}
-
-func (c *Config) GetMapString(key string) (retval map[string]string) {
-	retval = make(map[string]string)
-	for k, v := range c.getRawMap(key, TypeString) {
-		retval[k] = v.strval
-	}
-	return
-}
-
-func (c *Config) GetMapBool(key string) (retval map[string]bool) {
-	retval = make(map[string]bool)
-	for k, v := range c.getRawMap(key, TypeBool) {
-		retval[k] = v.boolval
-	}
-	return
-}
-
-func (c *Config) GetMapHex(key string) (retval map[string][]byte) {
-	retval = make(map[string][]byte)
-	for k, v := range c.getRawMap(key, TypeHex) {
-		retval[k] = v.binval
-	}
-	return
-}
-
-func (c *Config) GetMapMapInt(key string) (retval map[string]map[string]int64) {
-	retval = make(map[string]map[string]int64)
-	for k1, v1 := range c.getRawMapMap(key, TypeInt) {
-		retval[k1] = make(map[string]int64)
-		for k2, v2 := range v1 {
-			retval[k1][k2] = v2.intval
-		}
-	}
-	return
-}
-
-func (c *Config) GetMapMapDuration(key string) (retval map[string]map[string]time.Duration) {
-	retval = make(map[string]map[string]time.Duration)
-	for k1, v1 := range c.getRawMapMap(key, TypeDuration) {
-		retval[k1] = make(map[string]time.Duration)
-		for k2, v2 := range v1 {
-			retval[k1][k2] = v2.durval
-		}
-	}
-	return
-}
-
-func (c *Config) GetMapMapString(key string) (retval map[string]map[string]string) {
-	retval = make(map[string]map[string]string)
-	for k1, v1 := range c.getRawMapMap(key, TypeString) {
-		retval[k1] = make(map[string]string)
-		for k2, v2 := range v1 {
-			retval[k1][k2] = v2.strval
-		}
-	}
-	return
-}
-
-func (c *Config) GetMapMapBool(key string) (retval map[string]map[string]bool) {
-	retval = make(map[string]map[string]bool)
-	for k1, v1 := range c.getRawMapMap(key, TypeBool) {
-		retval[k1] = make(map[string]bool)
-		for k2, v2 := range v1 {
-			retval[k1][k2] = v2.boolval
-		}
-	}
-	return
-}
-
-func (c *Config) GetMapMapHex(key string) (retval map[string]map[string][]byte) {
-	retval = make(map[string]map[string][]byte)
-	for k1, v1 := range c.getRawMapMap(key, TypeHex) {
-		retval[k1] = make(map[string][]byte)
-		for k2, v2 := range v1 {
-			retval[k1][k2] = v2.binval
-		}
-	}
-	return
-}
-
-func (c *Config) GetMapMapMapInt(key string) (retval map[string]map[string]map[string]int64) {
-	retval = make(map[string]map[string]map[string]int64)
-	for k1, v1 := range c.getRawMapMapMap(key, TypeInt) {
-		retval[k1] = make(map[string]map[string]int64)
-		for k2, v2 := range v1 {
-			retval[k1][k2] = make(map[string]int64)
-			for k3, v3 := range v2 {
-				retval[k1][k2][k3] = v3.intval
-			}
-		}
-	}
-	return
-}
-
-func (c *Config) GetMapMapMapDuration(key string) (retval map[string]map[string]map[string]time.Duration) {
-	retval = make(map[string]map[string]map[string]time.Duration)
-	for k1, v1 := range c.getRawMapMapMap(key, TypeDuration) {
-		retval[k1] = make(map[string]map[string]time.Duration)
-		for k2, v2 := range v1 {
-			retval[k1][k2] = make(map[string]time.Duration)
-			for k3, v3 := range v2 {
-				retval[k1][k2][k3] = v3.durval
-			}
-		}
-	}
-	return
-}
-
-func (c *Config) GetMapMapMapString(key string) (retval map[string]map[string]map[string]string) {
-	retval = make(map[string]map[string]map[string]string)
-	for k1, v1 := range c.getRawMapMapMap(key, TypeString) {
-		retval[k1] = make(map[string]map[string]string)
-		for k2, v2 := range v1 {
-			retval[k1][k2] = make(map[string]string)
-			for k3, v3 := range v2 {
-				retval[k1][k2][k3] = v3.strval
-			}
-		}
-	}
-	return
-}
-
-func (c *Config) GetMapMapMapBool(key string) (retval map[string]map[string]map[string]bool) {
-	retval = make(map[string]map[string]map[string]bool)
-	for k1, v1 := range c.getRawMapMapMap(key, TypeBool) {
-		retval[k1] = make(map[string]map[string]bool)
-		for k2, v2 := range v1 {
-			retval[k1][k2] = make(map[string]bool)
-			for k3, v3 := range v2 {
-				retval[k1][k2][k3] = v3.boolval
-			}
-		}
-	}
-	return
-}
-
-func (c *Config) GetMapMapMapHex(key string) (retval map[string]map[string]map[string][]byte) {
-	retval = make(map[string]map[string]map[string][]byte)
-	for k1, v1 := range c.getRawMapMapMap(key, TypeHex) {
-		retval[k1] = make(map[string]map[string][]byte)
-		for k2, v2 := range v1 {
-			retval[k1][k2] = make(map[string][]byte)
-			for k3, v3 := range v2 {
-				retval[k1][k2][k3] = v3.binval
-			}
-		}
-	}
-	return
-}
-
-func (c *Config) GetMapMapMapMapInt(key string) (retval map[string]map[string]map[string]map[string]int64) {
-	retval = make(map[string]map[string]map[string]map[string]int64)
-	for k1, v1 := range c.getRawMapMapMapMap(key, TypeInt) {
-		retval[k1] = make(map[string]map[string]map[string]int64)
-		for k2, v2 := range v1 {
-			retval[k1][k2] = make(map[string]map[string]int64)
-			for k3, v3 := range v2 {
-				retval[k1][k2][k3] = make(map[string]int64)
-				for k4, v4 := range v3 {
-					retval[k1][k2][k3][k4] = v4.intval
-				}
-			}
-		}
-	}
-	return
-}
-
-func (c *Config) GetMapMapMapMapDuration(key string) (retval map[string]map[string]map[string]map[string]time.Duration) {
-	retval = make(map[string]map[string]map[string]map[string]time.Duration)
-	for k1, v1 := range c.getRawMapMapMapMap(key, TypeDuration) {
-		retval[k1] = make(map[string]map[string]map[string]time.Duration)
-		for k2, v2 := range v1 {
-			retval[k1][k2] = make(map[string]map[string]time.Duration)
-			for k3, v3 := range v2 {
-				retval[k1][k2][k3] = make(map[string]time.Duration)
-				for k4, v4 := range v3 {
-					retval[k1][k2][k3][k4] = v4.durval
-				}
-			}
-		}
-	}
-	return
-}
-
-func (c *Config) GetMapMapMapMapString(key string) (retval map[string]map[string]map[string]map[string]string) {
-	retval = make(map[string]map[string]map[string]map[string]string)
-	for k1, v1 := range c.getRawMapMapMapMap(key, TypeString) {
-		retval[k1] = make(map[string]map[string]map[string]string)
-		for k2, v2 := range v1 {
-			retval[k1][k2] = make(map[string]map[string]string)
-			for k3, v3 := range v2 {
-				retval[k1][k2][k3] = make(map[string]string)
-				for k4, v4 := range v3 {
-					retval[k1][k2][k3][k4] = v4.strval
-				}
-			}
-		}
-	}
-	return
-}
-
-func (c *Config) GetMapMapMapMapBool(key string) (retval map[string]map[string]map[string]map[string]bool) {
-	retval = make(map[string]map[string]map[string]map[string]bool)
-	for k1, v1 := range c.getRawMapMapMapMap(key, TypeBool) {
-		retval[k1] = make(map[string]map[string]map[string]bool)
-		for k2, v2 := range v1 {
-			retval[k1][k2] = make(map[string]map[string]bool)
-			for k3, v3 := range v2 {
-				retval[k1][k2][k3] = make(map[string]bool)
-				for k4, v4 := range v3 {
-					retval[k1][k2][k3][k4] = v4.boolval
-				}
-			}
-		}
-	}
-	return
-}
-
-func (c *Config) GetMapMapMapMapHex(key string) (retval map[string]map[string]map[string]map[string][]byte) {
-	retval = make(map[string]map[string]map[string]map[string][]byte)
-	for k1, v1 := range c.getRawMapMapMapMap(key, TypeHex) {
-		retval[k1] = make(map[string]map[string]map[string][]byte)
-		for k2, v2 := range v1 {
-			retval[k1][k2] = make(map[string]map[string][]byte)
-			for k3, v3 := range v2 {
-				retval[k1][k2][k3] = make(map[string][]byte)
-				for k4, v4 := range v3 {
-					retval[k1][k2][k3][k4] = v4.binval
-				}
-			}
-		}
-	}
-	return
-}
-
-func (c *Config) GetMapMapMapMapMapInt(key string) (retval map[string]map[string]map[string]map[string]map[string]int64) {
-	retval = make(map[string]map[string]map[string]map[string]map[string]int64)
-	for k1, v1 := range c.getRawMapMapMapMapMap(key, TypeInt) {
-		retval[k1] = make(map[string]map[string]map[string]map[string]int64)
-		for k2, v2 := range v1 {
-			retval[k1][k2] = make(map[string]map[string]map[string]int64)
-			for k3, v3 := range v2 {
-				retval[k1][k2][k3] = make(map[string]map[string]int64)
-				for k4, v4 := range v3 {
-					retval[k1][k2][k3][k4] = make(map[string]int64)
-					for k5, v5 := range v4 {
-						retval[k1][k2][k3][k4][k5] = v5.intval
-					}
-				}
-			}
-		}
-	}
-	return
-}
-
-func (c *Config) GetMapMapMapMapMapDuration(key string) (retval map[string]map[string]map[string]map[string]map[string]time.Duration) {
-	retval = make(map[string]map[string]map[string]map[string]map[string]time.Duration)
-	for k1, v1 := range c.getRawMapMapMapMapMap(key, TypeDuration) {
-		retval[k1] = make(map[string]map[string]map[string]map[string]time.Duration)
-		for k2, v2 := range v1 {
-			retval[k1][k2] = make(map[string]map[string]map[string]time.Duration)
-			for k3, v3 := range v2 {
-				retval[k1][k2][k3] = make(map[string]map[string]time.Duration)
-				for k4, v4 := range v3 {
-					retval[k1][k2][k3][k4] = make(map[string]time.Duration)
-					for k5, v5 := range v4 {
-						retval[k1][k2][k3][k4][k5] = v5.durval
-					}
-				}
-			}
-		}
-	}
-	return
-}
-
-func (c *Config) GetMapMapMapMapMapString(key string) (retval map[string]map[string]map[string]map[string]map[string]string) {
-	retval = make(map[string]map[string]map[string]map[string]map[string]string)
-	for k1, v1 := range c.getRawMapMapMapMapMap(key, TypeString) {
-		retval[k1] = make(map[string]map[string]map[string]map[string]string)
-		for k2, v2 := range v1 {
-			retval[k1][k2] = make(map[string]map[string]map[string]string)
-			for k3, v3 := range v2 {
-				retval[k1][k2][k3] = make(map[string]map[string]string)
-				for k4, v4 := range v3 {
-					retval[k1][k2][k3][k4] = make(map[string]string)
-					for k5, v5 := range v4 {
-						retval[k1][k2][k3][k4][k5] = v5.strval
-					}
-				}
-			}
-		}
-	}
-	return
-}
-
-func (c *Config) GetMapMapMapMapMapBool(key string) (retval map[string]map[string]map[string]map[string]map[string]bool) {
-	retval = make(map[string]map[string]map[string]map[string]map[string]bool)
-	for k1, v1 := range c.getRawMapMapMapMapMap(key, TypeBool) {
-		retval[k1] = make(map[string]map[string]map[string]map[string]bool)
-		for k2, v2 := range v1 {
-			retval[k1][k2] = make(map[string]map[string]map[string]bool)
-			for k3, v3 := range v2 {
-				retval[k1][k2][k3] = make(map[string]map[string]bool)
-				for k4, v4 := range v3 {
-					retval[k1][k2][k3][k4] = make(map[string]bool)
-					for k5, v5 := range v4 {
-						retval[k1][k2][k3][k4][k5] = v5.boolval
-					}
-				}
-			}
-		}
-	}
-	return
-}
-
-func (c *Config) GetMapMapMapMapMapHex(key string) (retval map[string]map[string]map[string]map[string]map[string][]byte) {
-	retval = make(map[string]map[string]map[string]map[string]map[string][]byte)
-	for k1, v1 := range c.getRawMapMapMapMapMap(key, TypeHex) {
-		retval[k1] = make(map[string]map[string]map[string]map[string][]byte)
-		for k2, v2 := range v1 {
-			retval[k1][k2] = make(map[string]map[string]map[string][]byte)
-			for k3, v3 := range v2 {
-				retval[k1][k2][k3] = make(map[string]map[string][]byte)
-				for k4, v4 := range v3 {
-					retval[k1][k2][k3][k4] = make(map[string][]byte)
-					for k5, v5 := range v4 {
-						retval[k1][k2][k3][k4][k5] = v5.binval
-					}
-				}
-			}
-		}
-	}
-	return
-}
-
 func getFirstRune(str string) rune {
 	for _, v := range str {
 		return v
diff --git a/generate.py b/generate.py
old mode 100644
new mode 100755
index ba851c4..4b333fc
--- a/generate.py
+++ b/generate.py
@@ -1,73 +1,91 @@
 #!/usr/bin/env python3
 import typing
+import tempfile
+import os.path
+import os
+import shutil
+import subprocess
+from dataclasses import dataclass
+
+
+@dataclass
+class DataType:
+    const_type: str
+    go_type: str
+    sig_type: str
+    value_type: str
 
 
 def get_return_type(levels: int, dtype: str) -> str:
     return ("map[string]" * levels) + dtype
 
 
-def get_signature(levels: int, sig_dtype: str, dtype: str) -> str:
+def get_signature(levels: int, data_type: DataType) -> str:
     return (
-        "func (c *Config) get"
+        "func (c *Config) Get"
         + ("Map" * levels)
-        + sig_dtype
+        + data_type.sig_type
         + "(key string) (empty "
-        + get_return_type(levels, dtype)
+        + get_return_type(levels, data_type.go_type)
         + ") {"
     )
 
 
-def get_empty_def(levels: int, dtype: str) -> str:
-    return "empty = make(" + get_return_type(levels, dtype) + ")"
+def get_empty_def(levels: int, data_type: DataType) -> str:
+    return "empty = make(" + get_return_type(levels, data_type.go_type) + ")"
 
 
 def get_nested_keys(levels: int) -> str:
     txt = ""
     for count in range(levels):
-        txt += "[k" + str(count + 10) + "]"
+        txt += "[k" + str(count + 11) + "]"
     return txt
 
 
-def get_retval_def(levels: int, current_level: int, dtype: str) -> str:
+def get_retval_def(levels: int, current_level: int, data_type: DataType) -> str:
     base = "retval := make("
     if current_level > 0:
         base = "retval" + get_nested_keys(current_level) + " = make("
-    return base + get_return_type(levels - current_level, dtype) + ")"
+    return base + get_return_type(levels - current_level, data_type.go_type) + ")"
 
 
 def get_entries(levels: int) -> str:
-    return f"v9, ok := c.mapEnv[{levels}].next[key]"
+    return f"v10, ok := c.mapEnv[{levels-1}].next[key]"
 
 
 def get_entry(levels: int) -> str:
-    return f"entry := c.env[v{levels}.key]"
+    return f"entry := c.env[v{levels + 11}.key]"
+
+
+def set_value(levels: int, data_type: DataType) -> str:
+    return f"retval{get_nested_keys(levels + 1)} = entry.parsed.{data_type.value_type}"
 
 
 def get_loop(levels: int) -> str:
-    return f"for k{levels + 10}, v{levels + 10} := range v{levels + 9}.next {{"
+    return f"for k{levels + 11}, v{levels + 11} := range v{levels + 10}.next {{"
 
 
-def get_function(file: typing.TextIO, levels: int, sig_dtype: str, dtype: str):
-    print(get_signature(levels, sig_dtype, dtype), file=file)
-    print(get_empty_def(levels, dtype), file=file)
-    print(get_retval_def(levels, 0, dtype), file=file)
+def get_function(file: typing.TextIO, levels: int, data_type: DataType):
+    print(get_signature(levels, data_type), file=file)
+    print(get_empty_def(levels, data_type), file=file)
+    print(get_retval_def(levels, 0, data_type), file=file)
     print("if c.parsed {", file=file)
     print("key = cleanKey(key)", file=file)
     print(get_entries(levels), file=file)
-    for level in range(levels):
+    print("if ok {", file=file)
+    for level in range(levels - 1):
         print(get_loop(level), file=file)
-        print(get_retval_def(levels, level, dtype), file=file)
-    print(get_loop(levels), file=file)
-    print(get_entry(levels), file=file)
+        print(get_retval_def(levels, level + 1, data_type), file=file)
+    print(get_loop(levels - 1), file=file)
+    print(get_entry(levels - 1), file=file)
     print(
-        "if (entry.dtype.baseType() == dtype.baseType()) && (entry.parsed.err == nil) {",
+        f"if (entry.dtype.baseType() == {data_type.const_type}.baseType()) && (entry.parsed.err == nil) {{",
         file=file,
     )
-    print("retval[k] = entry.parsed", file=file)
+    print(set_value(levels - 1, data_type), file=file)
     print("} else {", file=file)
     print("return", file=file)
-    print("}", file=file)
-    print("}", file=file)
+    print("};" * (levels + 1), file=file)
     print("return retval", file=file)
     print("}", file=file)
     print("}", file=file)
@@ -75,32 +93,63 @@ def get_function(file: typing.TextIO, levels: int, sig_dtype: str, dtype: str):
     print("}", file=file)
 
 
-with open("generated_code.go", mode="w", encoding="utf-8") as f:
-    print("package envconf", file=f)
-    get_function(f, 3, "Int", "int64")
+def main():
+    data_types = [
+        DataType(
+            const_type="TypeInt", go_type="int64", sig_type="Int", value_type="intval"
+        ),
+        DataType(
+            const_type="TypeMetric",
+            go_type="int64",
+            sig_type="Metric",
+            value_type="intval",
+        ),
+        DataType(
+            const_type="TypeDuration",
+            go_type="time.Duration",
+            sig_type="Duration",
+            value_type="durval",
+        ),
+        DataType(
+            const_type="TypeString",
+            go_type="string",
+            sig_type="String",
+            value_type="strval",
+        ),
+        DataType(
+            const_type="TypeDirectory",
+            go_type="string",
+            sig_type="Directory",
+            value_type="strval",
+        ),
+        DataType(
+            const_type="TypeBool", go_type="bool", sig_type="Bool", value_type="boolval"
+        ),
+        DataType(
+            const_type="TypeHex", go_type="[]byte", sig_type="Hex", value_type="binval"
+        ),
+    ]
+
+    levels = 5
+
+    with tempfile.TemporaryDirectory() as pathname:
+        code_file = os.path.join(pathname, "code.go")
+        with open(code_file, mode="w", encoding="utf-8") as f:
+            print("package envconf", file=f)
+            print('import "time"', file=f)
+            print(f"type mapEnvType [{levels}]*keyLookupType", file=f)
+            for level in range(levels):
+                for data_type in data_types:
+                    get_function(f, level + 1, data_type)
+        if subprocess.run(["go", "fmt", code_file], check=True).returncode == 0:
+            shutil.copyfile(
+                code_file,
+                os.path.join(
+                    os.path.dirname(os.path.realpath(__file__)), "auto_generated.go"
+                ),
+                follow_symlinks=False,
+            )
 
 
-#
-# func (c *Config) getRawMap(key string, dtype DataType) (empty map[string]cValue) {
-# 	empty = make(map[string]cValue)
-# 	retval := make(map[string]cValue)
-# 	if c.parsed {
-# 		key = cleanKey(key)
-# 		entries, ok := c.mapEnv[0].next[key]
-#
-# 		if ok {
-# 			for k, v := range entries.next {
-# 				entry := c.env[v.key]
-# 				if (entry.dtype.baseType() == dtype.baseType()) && (entry.parsed.err == nil) {
-# 					retval[k] = entry.parsed
-# 				} else {
-# 					return
-# 				}
-# 			}
-# 			return retval
-# 		}
-# 	}
-# 	return
-# }
-#
-#
+if __name__ == "__main__":
+    main()
diff --git a/generated_code.go b/generated_code.go
deleted file mode 100644
index 8c72b46..0000000
--- a/generated_code.go
+++ /dev/null
@@ -1,25 +0,0 @@
-func (c *Config) getMapMapMapInt(key string) (empty map[string]map[string]map[string]int64) {
-empty = make(map[string]map[string]map[string]int64)
-retval := make(map[string]map[string]map[string]int64)
-if c.parsed {
-key = cleanKey(key)
-v9, ok := c.mapEnv[3].next[key]
-for k10, v10 := range v9.next {
-retval := make(map[string]map[string]map[string]int64)
-for k11, v11 := range v10.next {
-retval[k10] = make(map[string]map[string]int64)
-for k12, v12 := range v11.next {
-retval[k10][k11] = make(map[string]int64)
-for k13, v13 := range v12.next {
-entry := c.env[v3.key]
-if (entry.dtype.baseType() == dtype.baseType()) && (entry.parsed.err == nil) {
-retval[k] = entry.parsed
-} else {
-return
-}
-}
-return retval
-}
-}
-return
-}
diff --git a/tests/build.sh b/tests/build.sh
index 9159d28..70ab1a2 100755
--- a/tests/build.sh
+++ b/tests/build.sh
@@ -13,7 +13,6 @@ mkdir -p ${GOPATH}/src
 mkdir -p ${dir}/bin
 
 cp -r "${dir}/main.go" "${dir}/buildenv/src/main.go"
-
 cd ${dir}/buildenv
 
 go mod init src
@@ -21,9 +20,12 @@ go mod tidy
 
 package_name=$(ls ${dir}/buildenv/deps/pkg/mod/git.purser.it/roypur | tr -d "\n")
 package_dir="${dir}/buildenv/deps/pkg/mod/git.purser.it/roypur/${package_name}"
-chmod -R 777 ${package_dir}
 
-rm ${package_dir}/*.go
+chmod -R 777 "${dir}/buildenv/deps"
+rm -R "${package_dir}"
+mkdir -p "${package_dir}"
+
 cp $(dirname ${dir})/*.go ${package_dir}
 
-go build -o "${dir}/bin/test" "src/main.go"
+cd "${dir}"
+go build -o "${dir}/bin/test"
diff --git a/tests/main.go b/tests/main.go
index 85d51a7..815dd74 100644
--- a/tests/main.go
+++ b/tests/main.go
@@ -11,6 +11,6 @@ func main() {
 	conf.DefineMap("test_map", envconf.TypeInt)
 	conf.Parse()
 	conf.Status()
-	fmt.Println(conf.GetMapMapMapInt("test_map"))
+	fmt.Println(conf.GetMapMapMapMapMapInt("test_map"))
 	fmt.Println(conf.GetInt("this_is_a_map"))
 }