syntax_data: {"ast_node_type":"other","tokens":[{"end":97,"kind":"keyword","start":0,"text":"ty::ConstKind::Expr(_)"}]}
source_snippet:             ty::ConstKind::Expr(_) | ty::ConstKind::Unevaluated(_) | ty::ConstKind::Error(_) => {
context_before:             // they might unify with any value.
context_after:                 true