code: def get_json_ident(request_headers: dict) -> int:
          
          if 'HTTP_USER_AGENT' in request_headers:
              indent = 2 if re.match("[Mozilla]{7}", request_headers['HTTP_USER_AGENT']) else 0
          else:
              indent = 0
  
          return indent
docs: Defines whether the JSON response will be indented or not
          :param request_headers: dict
          :return: self