code: def check(self, field):
          '''
          Returns permissions determined by object itself
          '''
          if self.permissions is None:
              return field.parent.permissions
          return self.permissionf check(self, field):
          '''
          Returns permissions determined by object itself
          '''
          if self.permissions is None:
              return field.parent.permissions
          return self.permissions
docs: Returns permissions determined by object itself