func (config *Config) String(key string, def string) string {
	return getString(config.values, key, def)
}
func (config *Config) String(key string, def string) string {
	return getString(config.values, key, def)
}
func ( config * Config ) String ( key string , def string ) string { return getString ( config . values , key , def ) }
/*
String looks for the specified key and returns it as a string. If not found the default value def is returned.
*/
/ * String looks for the specified key and returns it as a string . If not found the default value def is returned .