syntax_data: {"ast_node_type":"other","tokens":[{"end":21,"kind":"keyword","start":0,"text":"debug_assert_eq!("}]}
source_snippet:     debug_assert_eq!(
context_before:     debug_assert!(!key.has_non_region_infer() && !key.has_non_region_param());
context_after:         tcx.normalize_erasing_regions(ty::TypingEnv::fully_monomorphized(), key),