code: def _get_children(self, parent_name, parent_id, name_contains, exclude_response_fields=None):
          
          data = {}
          if name_contains is not None:
              data['name_contains'] = name_contains
          if exclude_response_fields:
              data['exclude_response_fields'] = ' '.join(exclude_response_fields)
          url_prefix = "/{}/{}/children".format(parent_name, parent_id)
          return self._get_collection(url_prefix, data)
docs: Send GET message to /<parent_name>/<parent_id>/children to fetch info about children(files and folders)
          :param parent_name: str 'projects' or 'folders'
          :param parent_id: str uuid of project or folder
          :param name_contains: name filtering (if not None this method works recursively)
          :param exclude_response_fields: [str]: list of fields to exclude in the response items
          :return: requests.Response containing the successful result