syntax_data: {"ast_node_type":"other","tokens":[{"end":38,"kind":"keyword","start":0,"text":"type"}]}
source_snippet:         type Result = ControlFlow<()>;
context_before:     impl<'tcx> TypeVisitor<TyCtxt<'tcx>> for UsedParamsNeedInstantiationVisitor<'tcx> {
context_after:         fn visit_ty(&mut self, ty: Ty<'tcx>) -> Self::Result {