public virtual IEnumerable <IPluginHandler> GetGraphProcessingPluginHandlers(GraphProcessingOptions getGraphProcessingOptions) { if (getGraphProcessingOptions.HasFlag(GraphProcessingOptions.Tracing)) { if (m_DebugInstrumentationHandler == null) { m_DebugInstrumentationHandler = new DebugInstrumentationHandler(); } yield return(m_DebugInstrumentationHandler); } }