code: def validate_and_get_warnings(self):
          
          self.warnings_container.clear()
          self._validate_stops_with_same_stop_time()
          self._validate_speeds_and_trip_times()
          self._validate_stop_spacings()
          self._validate_stop_sequence()
          self._validate_misplaced_stops()
          return self.warnings_container
docs: Validates/checks a given GTFS feed with respect to a number of different issues.
  
          The set of warnings that are checked for, can be found in the gtfs_validator.ALL_WARNINGS
  
          Returns
          -------
          warnings: WarningsContainer