'Returns a global `IOLoop` instance.
Most applications have a single, global `IOLoop` running on the
main thread.  Use this method to get this instance from
another thread.  To get the current thread\'s `IOLoop`, use `current()`.'

@classmethod
def instance(cls, *args, **kwargs):

    PollIOLoop.configure(cls)
    _deprecated()
    loop = PollIOLoop.instance(*args, **kwargs)
    return loop
