syntax_data: {"ast_node_type":"other","tokens":[{"end":69,"kind":"keyword","start":0,"text":"CanonicalVarKind::Ty(CanonicalTyVarKind::General(_))"}]}
source_snippet:             CanonicalVarKind::Ty(CanonicalTyVarKind::General(_)) => {
context_before:         match self {
context_after:                 CanonicalVarKind::Ty(CanonicalTyVarKind::General(ui))