new_contents: from flask_restful import reqparse
  
  
  class ArgsMixin(object):
      def get_args(self, descriptors):
          parser = reqparse.RequestParser()
          for (name, default, required) in descriptors:
              if required is None:
                  required = False
              parser.add_argument(name, required=required, default=default)
  
          return parser.parse_args()
  
subject: Add util mixin to manage request args more easily