code: def create_changeset(self, changeset, project=None):
          
          route_values = {}
          if project is not None:
              route_values['project'] = self._serialize.url('project', project, 'str')
          content = self._serialize.body(changeset, 'TfvcChangeset')
          response = self._send(http_method='POST',
                                location_id='0bc8f0a4-6bfb-42a9-ba84-139da7b99c49',
                                version='5.0',
                                route_values=route_values,
                                content=content)
          return self._deserialize('TfvcChangesetRef', response)
docs: CreateChangeset.
          Create a new changeset.
          :param :class:`<TfvcChangeset> <azure.devops.v5_0.tfvc.models.TfvcChangeset>` changeset:
          :param str project: Project ID or project name
          :rtype: :class:`<TfvcChangesetRef> <azure.devops.v5_0.tfvc.models.TfvcChangesetRef>`