syntax_data: {"ast_node_type":"other","tokens":[{"end":48,"kind":"keyword","start":0,"text":"//"}]}
source_snippet:     // canonicalize and all that for such cases.
context_before:     // `&T`, accounts for about 60% percentage of the predicates we have to prove. No need to
context_after:     if let ty::PredicateKind::Clause(ty::ClauseKind::Trait(trait_pred)) =