{"ast_node_type":"other","tokens":[{"end":65,"kind":"keyword","start":0,"text":"ty::ConstKind::Value(cv)"}]}
                ty::ConstKind::Value(cv) => cv.ty.is_primitive(),
                // types are fine though.
                ty::ConstKind::Unevaluated(..) | ty::ConstKind::Expr(..) => false,