docs: def project_plans(self, project_key):
          """
          Returns a generator with the plans in a given project
          :param project_key: Project key
          :return: Generator with plans
          """
          resource = 'project/{}'.format(project_key, max_results=25)
          return self.base_list_call(resource, expand='plans', favourite=False, clover_enabled=False, max_results=25,
                                     elements_key='plans', element_key='plan')