syntax_data: {"ast_node_type":"impl","tokens":[{"end":59,"kind":"keyword","start":0,"text":"mk_place:"}]}
source_snippet:         mk_place: impl FnOnce(TyCtxt<'tcx>) -> Place<'tcx>,
context_before:         elem: PlaceElem<'tcx>,
context_after:     ) -> MovePathIndex {