syntax_data: {"ast_node_type":"variable","tokens":[{"end":100,"kind":"keyword","start":0,"text":"let"}]}
source_snippet:             let predicates = tcx.predicates_of(alias_ty.def_id).instantiate_own(tcx, alias_ty.args);
context_before:         if let ty::Alias(ty::Projection, alias_ty) = placeholder_self_ty.kind() {
context_after:             for (predicate, _) in predicates {