syntax_data: {"ast_node_type":"other","tokens":[{"end":80,"kind":"keyword","start":0,"text":"Ty::new_alias(tcx,"}]}
source_snippet:         Ty::new_alias(tcx, ty::Projection, AliasTy::new(tcx, item_def_id, args))
context_before:     ) -> Ty<'tcx> {
context_after:     }