code: def get_bool(self, key, default=UndefinedKey):
          
  
          # String conversions as per API-recommendations:
          # https://github.com/typesafehub/config/blob/master/HOCON.md#automatic-type-conversions
          bool_conversions = {
              None: None,
              'true': True, 'yes': True, 'on': True,
              'false': False, 'no': False, 'off': False
          }
          string_value = self.get_string(key, default)
          if string_value is not None:
              string_value = string_value.lower()
          try:
              return bool_conversions[string_value]
          except KeyError:
              raise ConfigException(
                  u"{key} does not translate to a Boolean value".format(key=key))
docs: Return boolean representation of value found at key
  
          :param key: key to use (dot separated). E.g., a.b.c
          :type key: basestring
          :param default: default value if key not found
          :type default: bool
          :return: boolean value
          :type return: bool