Add a Pipeline to be applied after this processing pipeline.

        Arguments:
            pipeline: The Pipeline or callable to apply after this
                Pipeline.

def add_after(self, pipeline):
        """Add a Pipeline to be applied after this processing pipeline.

        Arguments:
            pipeline: The Pipeline or callable to apply after this
                Pipeline.
        """
        if not isinstance(pipeline, Pipeline):
            pipeline = Pipeline(pipeline)
        self.pipes = self.pipes[:] + pipeline.pipes[:]
        return self