syntax_data: {"ast_node_type":"other","tokens":[{"end":52,"kind":"keyword","start":0,"text":"assert_eq!(ui,"}]}
source_snippet:                 assert_eq!(ui, UniverseIndex::ROOT);
context_before:             CanonicalVarKind::Ty(CanonicalTyVarKind::Int | CanonicalTyVarKind::Float) => {
context_after:                 self