syntax_data: {"ast_node_type":"other","tokens":[{"end":46,"kind":"keyword","start":0,"text":"ty::PredicateKind::Ambiguous"}]}
source_snippet:             ty::PredicateKind::Ambiguous => {}
context_before:             ty::PredicateKind::Clause(ty::ClauseKind::UnstableFeature(_sym)) => {}
context_after:         }