{"ast_node_type":"other","tokens":[{"end":88,"kind":"keyword","start":0,"text":"MetaVarExpr::Count(ident,"}]}
            MetaVarExpr::Count(ident, _) | MetaVarExpr::Ignore(ident) => cb(aux, ident),
            }
            MetaVarExpr::Index(..) | MetaVarExpr::Len(..) => aux,