code: def check_order(self):
          
  
          for feature, info in self.constraints.items():
              self._check_feature(feature, info, 'before')
              self._check_feature(feature, info, 'after')
              self._check_position(feature, info)
  
          return not self.has_errors()
docs: Performs the check and store the violations in self.violations.
          :return: boolean indicating the error state