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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 rename_dont_move(self, path, dest):
 """ Use snakebite.rename_dont_move, if available. :param path: source path (single input) :type path: string :param dest: destination path :type dest: string :return: True if succeeded :raises: snakebite.errors.FileAlreadyExistsException """

        from snakebite.errors import FileAlreadyExistsException
        try:
            self.get_bite().rename2(path, dest, overwriteDest=False)
        except FileAlreadyExistsException:
            # Unfortunately python2 don't allow exception chaining.
            raise luigi.target.FileAlreadyExists()