def METHOD_NAME(cls):
    """Get the (singleton) instance of the `StdStreamDispatcher` class.
    Getting a reference to the `StdOutManager` class outside of the scope of
    the user's scripts should be done through this class method.
    Returns
    -------
    StdStreamDispatcher or None
        Instance of the `Mouse` class created by the user.
    """
    return cls._instance