{"ast_node_type":"other","tokens":[{"end":94,"kind":"keyword","start":0,"text":"///"}]}
/// write back the source file before committing the rename in case a developer forgot some of
/// such as btrfs and ext4. When renaming over a file that already exists then they will "helpfully"
/// the fsyncs in the open/write/fsync(file)/rename/fsync(dir) dance for atomic file updates.