def fstat(self, file_des):
        """Return the os.stat-like tuple for the FakeFile object of file_des.

        Args:
            file_des: The file descriptor of filesystem object to retrieve.

        Returns:
            The FakeStatResult object corresponding to entry_path.

        Raises:
            OSError: if the filesystem object doesn't exist.
        """
        # stat should return the tuple representing return value of os.stat
        file_object = self.filesystem.get_open_file(file_des).get_object()
        return file_object.stat_result.copy()
Return the os.stat-like tuple for the FakeFile object of file_des.

        Args:
            file_des: The file descriptor of filesystem object to retrieve.

        Returns:
            The FakeStatResult object corresponding to entry_path.

        Raises:
            OSError: if the filesystem object doesn't exist.