syntax_data: {"ast_node_type":"other","tokens":[{"end":46,"kind":"keyword","start":0,"text":"for"}]}
source_snippet:             for (predicate, _) in predicates {
context_before:             let predicates = tcx.predicates_of(alias_ty.def_id).instantiate_own(tcx, alias_ty.args);
context_after:                 let normalized = normalize_with_depth_to(