syntax_data: {"ast_node_type":"other","tokens":[{"end":34,"kind":"keyword","start":0,"text":"parent:"}]}
source_snippet:     parent: Option<MovePathIndex>,
context_before:     init_path_map: &mut IndexVec<MovePathIndex, SmallVec<[InitIndex; 4]>>,
context_after:     place: Place<'tcx>,