syntax_data: {"ast_node_type":"other","tokens":[{"end":42,"kind":"keyword","start":0,"text":"TypingMode::Coherence"}]}
source_snippet:                 TypingMode::Coherence => {
context_before:                 // way later.
context_after:                     relation.register_predicates([ty::Binder::dummy(ty::PredicateKind::Ambiguous)]);