| MetaStmDecl of arity * meta_name (* name *)
| MetaStmListDecl of arity * meta_name (* name *)
| MetaFuncDecl of arity * meta_name (* name *)
| MetaStmDecl of arity * meta_name (* name *)
| MetaStmListDecl of arity * meta_name (* name *)
| MetaFuncDecl of arity * meta_name (* name *)