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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 remove(self, items, working_tree=False, **kwargs):
 """Remove the given items from the index and optionally from the working tree as well. :param items: Multiple types of items are supported which may be be freely mixed. - path string Remove the given path at all stages. If it is a directory, you must specify the r=True keyword argument to remove all file entries below it. If absolute paths are given, they will be converted to a path relative to the git repository directory containing the working tree The path string may include globs, such as *.c. - Blob Object Only the path portion is used in this case. - BaseIndexEntry or compatible type The only relevant information here Yis the path. The stage is ignored. :param working_tree: If True, the entry will also be removed from the working tree, physically removing the respective file. This may fail if there are uncommitted changes in it. :param kwargs: Additional keyword arguments to be passed to git-rm, such as 'r' to allow recursive removal of :return: been removed effectively. This is interesting to know in case you have provided a directory or globs. Paths are relative to the repository. """

        args = []
        if not working_tree:
            args.append("--cached")
        args.append("--")

        # preprocess paths
        paths = self._items_to_rela_paths(items)
        removed_paths = self.repo.git.rm(args, paths, **kwargs).splitlines()

        # process output to gain proper paths
        # rm 'path'
        return [p[4:-1] for p in removed_paths]