throws Throwable
  public void importDefinitions(Env env)    throws Throwable  {    for (Map.Entry<String,Function> entry : _functionMap.entrySet()) {      Function fun = entry.getValue();      if (fun.isGlobal())	env.addFunction(entry.getKey(), fun);    }        for (Map.Entry<String,InterpretedClassDef> entry : _classMap.entrySet()) {      env.addClassDef(entry.getKey(), entry.getValue());    }  }