code: def grab_next_to_finish(self, timeout: float=None) -> typing.List[DataAndMetadata.DataAndMetadata]:
          
          self.start_playing()
          return self.__hardware_source.get_next_xdatas_to_finish(timeout)
docs: 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