{"ast_node_type":"other","tokens":[{"end":51,"kind":"keyword","start":0,"text":"OpenInvisible(InvisibleOrigin::MetaVar("}]}
            OpenInvisible(InvisibleOrigin::MetaVar(
            Or => matches!(pat_kind, PatWithOr), // leading vert `|` or-pattern
                MetaVarKind::Expr { .. } |