syntax_data: {"ast_node_type":"other","tokens":[{"end":50,"kind":"keyword","start":0,"text":"//"}]}
source_snippet:     // We expect the input to be fully normalized.
context_before:     let PseudoCanonicalInput { typing_env, value: trait_ref } = key;
context_after:     debug_assert_eq!(trait_ref, tcx.normalize_erasing_regions(typing_env, trait_ref));