code: def query(self, force=False):
          
          if not self.is_valid():
              raise forms.ValidationError(self.errors)
          if force:
              self._is_selected = False
          if not self._is_selected:
              if self.queryset is None:
                  raise TypeError('Must be QuerySet not %s' %
                                  type(self.queryset))
              self.select()
              self._is_selected = True
          return self.queryset
docs: Returns the filtered/selected GeoQuerySet.