code: def validate(self):
          
          if not isinstance(self.fold_scope_location, FoldScopeLocation):
              raise TypeError(u'Expected FoldScopeLocation fold_scope_location, got: {} {}'.format(
                  type(self.fold_scope_location), self.fold_scope_location))
  
          if self.fold_scope_location.field != COUNT_META_FIELD_NAME:
              raise AssertionError(u'Unexpected field in the FoldScopeLocation of this '
                                   u'FoldCountContextField object: {} {}'
                                   .format(self.fold_scope_location, self))
docs: Validate that the FoldCountContextField is correctly representable.