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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:
 async def _oauth_get_user_future( self, access_token: Dict[str, Any] ) -> Dict[str, Any]: """Subclasses must override this to get basic information about the user. Should be a coroutine whose result is a dictionary containing information about the user, which may have been retrieved by using ``access_token`` to make a request to the service. The access token will be added to the returned dictionary to make the result of `get_authenticated_user`. .. versionchanged:: 5.1 Subclasses may also define this method with ``async def``. .. versionchanged:: 6.0 A synchronous fallback to ``_oauth_get_user`` was removed. """

        raise NotImplementedError()