syntax_data: {"ast_node_type":"other","tokens":[{"end":64,"kind":"keyword","start":0,"text":"projections:"}]}
source_snippet:     projections: FxHashMap<(PlaceIndex, TrackElem), PlaceIndex>,
context_before:     locals: IndexVec<Local, Option<PlaceIndex>>,
context_after:     places: IndexVec<PlaceIndex, PlaceInfo<'tcx>>,