docs: def get_boolean(self,
                      key,
                      is_list=False,
                      is_optional=False,
                      is_secret=False,
                      is_local=False,
                      default=None,
                      options=None):
          """
          Get a the value corresponding to the key and converts it to `bool`/`list(str)`.
  
          Args:
              key: the dict key.
              is_list: If this is one element or a list of elements.
              is_optional: To raise an error if key was not found.
              is_secret: If the key is a secret.
              is_local: If the key is a local to this service.
              default: default value if is_optional is True.
              options: list/tuple if provided, the value must be one of these values.
  
          Returns:
              `bool`: value corresponding to the key.
          """
          if is_list:
              return self._get_typed_list_value(key=key,
                                                target_type=bool,
                                                type_convert=lambda x: bool(strtobool(x)),
                                                is_optional=is_optional,
                                                is_secret=is_secret,
                                                is_local=is_local,
                                                default=default,
                                                options=options)
  
          return self._get_typed_value(key=key,
                                       target_type=bool,
                                       type_convert=lambda x: bool(strtobool(x)),
                                       is_optional=is_optional,
                                       is_secret=is_secret,
                                       is_local=is_local,
                                       default=default,
                                       options=options)