def test_initialise_directories_unattached_exists(self):
        directory = FilePath(self.mktemp())
        unattached_directory = directory.child(
            LoopbackBlockDeviceAPI._unattached_directory_name
        )
        unattached_directory.makedirs()
        self.assertDirectoryStructure(directory)
``from_path`` uses existing unattached directory if present.
dataset/ETHPy150Open ClusterHQ/flocker/flocker/node/agents/test/test_blockdevice.py/LoopbackBlockDeviceAPIImplementationTests.test_initialise_directories_unattached_exists