code: def pipeline_configs(self):
          
          if self._pipeline_config_manager is None:
              self._pipeline_config_manager = PipelineConfigManager(session=self._session)
          return self._pipeline_config_manager
docs: Property for accessing :class:`PipelineConfigManager` instance, which is used to manage pipeline configurations.
  
          :rtype: yagocd.resources.pipeline_config.PipelineConfigManager