def suggestThreadPoolSize(size):
        """
        Suggest the size of the internal threadpool used to dispatch functions
        passed to L{IReactorInThreads.callInThread}.
        """

        Suggest the size of the internal threadpool used to dispatch functions
        passed to L{IReactorInThreads.callInThread}.
        
stackoverflow/venv/lib/python3.6/site-packages/twisted/internet/interfaces.py