syntax_data: {"ast_node_type":"other","tokens":[{"end":72,"kind":"keyword","start":0,"text":"CanonicalVarKind::Ty(CanonicalTyVarKind::General(ui))"}]}
source_snippet:             CanonicalVarKind::Ty(CanonicalTyVarKind::General(ui)) => ui,
context_before:         match self {
context_after:             CanonicalVarKind::Region(ui) => ui,