syntax_data: {"ast_node_type":"variable","tokens":[{"end":61,"kind":"keyword","start":0,"text":"let"}]}
source_snippet:                 let proj = PlaceElem::Field(field, field_ty);
context_before:                 let field_ty = PlaceTy::field_ty(self.tcx, place_ty.ty, place_ty.variant_index, field);
context_after:                 let place = parent.project_deeper(&[proj], self.tcx);