46     def allocate(self, tr):  argument
130     def create_or_open(self, tr, path, layer=None):  argument
135     def open(self, tr, path, layer=None):  argument
140     def create(self, tr, path, layer=None, prefix=None):  argument
145     def list(self, tr, path=()):  argument
150     def move(self, tr, old_path, new_path):  argument
156     def move_to(self, tr, new_absolute_path):  argument
167     def remove(self, tr, path=()):  argument
173     def remove_if_exists(self, tr, path=()):  argument
179     def exists(self, tr, path=()):  argument
221     def create_or_open(self, tr, path, layer=None):  argument
232 …def _create_or_open_internal(self, tr, path, layer=None, prefix=None, allow_create=True, allow_ope…  argument
298     def open(self, tr, path, layer=None):  argument
308     def create(self, tr, path, layer=None, prefix=None):  argument
323     def move_to(self, tr, new_absolute_path):  argument
327     def move(self, tr, old_path, new_path):  argument
368     def remove(self, tr, path=()):  argument
378     def remove_if_exists(self, tr, path=()):  argument
387     def _remove_internal(self, tr, path, fail_on_nonexistent):  argument
410     def list(self, tr, path=()):  argument
427     def exists(self, tr, path=()):  argument
449     def _check_version(self, tr, write_access=True):  argument
466     def _initialize_directory(self, tr):  argument
469     def _node_containing_key(self, tr, key):  argument
497     def _find(self, tr, path):  argument
505     def _subdir_names_and_nodes(self, tr, node):  argument
510     def _remove_from_parent(self, tr, path):  argument
514     def _remove_recursive(self, tr, node):  argument
520     def _is_prefix_free(self, tr, prefix):  argument
527     def _is_prefix_empty(self, tr, prefix):  argument
620     def prefetch_metadata(self, tr):  argument
626     def layer(self, tr=None):  argument
634     def is_in_partition(self, tr=None, include_empty_subpath=False):  argument
640     def get_contents(self, directory_layer, tr=None):  argument