syntax_data: {"ast_node_type":"function","tokens":[{"end":75,"kind":"keyword","start":0,"text":"fn"}]}
source_snippet:     fn visit_rvalue(&mut self, rvalue: &Rvalue<'tcx>, location: Location) {
context_before: impl<'a, 'tcx> Visitor<'tcx> for EnumFinder<'a, 'tcx> {
context_after:         if let Rvalue::Cast(CastKind::Transmute, op, ty) = rvalue {