code: def sayHelloPromise(self, name="Not given", message="nothing"):
          
          print(
              "Python.sayHelloPromise called by: {0} "
              "with message: '{1}'".format(name, message)
          )
          return (
              "PythonPromise says: Howdy {0} "
              "that's a nice runtime you got there".format(name)
          )
docs: Implementation of IHello.sayHelloPromise.
          This method will be executed via some thread, and the remote caller
          will not block.