Method call_later

Lib/test/test_asyncio/test_tasks.py:1805–1808

(delay, callback, *args)

        orig_call_later = loop.call_later

        def call_later(delay, callback, *args):
            nonlocal handle
            handle = orig_call_later(delay, callback, *args)
            return handle

        loop.call_later = call_later
        test_utils.run_briefly(loop)