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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 grab_next_to_finish(self, timeout: float=None) -> typing.List[DataAndMetadata.DataAndMetadata]: """Grabs the next frame to finish and returns it as data and metadata. .. versionadded:: 1.0 :param timeout: The timeout in seconds. Pass None to use default. :return: The list of data and metadata items that were read. :rtype: list of :py:class:`DataAndMetadata` If the view is not already started, it will be started automatically. Scriptable: Yes """

        self.start_playing()
        return self.__hardware_source.get_next_xdatas_to_finish(timeout)