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Solve the following problem using Python, implementing the functions described below, one line at a time
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Description:
 def configure( cls, impl: "Union[None, str, Type[Configurable]]", **kwargs: Any ) -> None: """Configures the `AsyncHTTPClient` subclass to use. ``AsyncHTTPClient()`` actually creates an instance of a subclass. This method may be called with either a class object or the fully-qualified name of such a class (or ``None`` to use the default, ``SimpleAsyncHTTPClient``) If additional keyword arguments are given, they will be passed to the constructor of each subclass instance created. The keyword argument ``max_clients`` determines the maximum number of simultaneous `~AsyncHTTPClient.fetch()` operations that can execute in parallel on each `.IOLoop`. Additional arguments may be supported depending on the implementation class in use. Example:: AsyncHTTPClient.configure("tornado.curl_httpclient.CurlAsyncHTTPClient") """

        super(AsyncHTTPClient, cls).configure(impl, **kwargs)