code: def create_repository(self, git_repository_to_create, project=None, source_ref=None):
          
          route_values = {}
          if project is not None:
              route_values['project'] = self._serialize.url('project', project, 'str')
          query_parameters = {}
          if source_ref is not None:
              query_parameters['sourceRef'] = self._serialize.query('source_ref', source_ref, 'str')
          content = self._serialize.body(git_repository_to_create, 'GitRepositoryCreateOptions')
          response = self._send(http_method='POST',
                                location_id='225f7195-f9c7-4d14-ab28-a83f7ff77e1f',
                                version='5.1-preview.1',
                                route_values=route_values,
                                query_parameters=query_parameters,
                                content=content)
          return self._deserialize('GitRepository', response)
docs: CreateRepository.
          [Preview API] Create a git repository in a team project.
          :param :class:`<GitRepositoryCreateOptions> <azure.devops.v5_1.git.models.GitRepositoryCreateOptions>` git_repository_to_create: Specify the repo name, team project and/or parent repository. Team project information can be ommitted from gitRepositoryToCreate if the request is project-scoped (i.e., includes project Id).
          :param str project: Project ID or project name
          :param str source_ref: [optional] Specify the source refs to use while creating a fork repo
          :rtype: :class:`<GitRepository> <azure.devops.v5_1.git.models.GitRepository>`