code: async def load_message_field(obj, msg, field, field_archiver=None):
      
      fname, ftype, params = field[0], field[1], field[2:]
      field_archiver = field_archiver if field_archiver else load_field
      await field_archiver(obj[fname], ftype, params, eref(msg, fname))
docs: Loads message field from the object. Field is defined by the message field specification.
      Returns loaded value, supports field reference.
  
      :param reader:
      :param msg:
      :param field:
      :param field_archiver:
      :return: