Take this method
采取这种方法
/**
* @return List of group IDs the person belongs to
*
*/
public List<String> getGroups() {
if (this.getId().equals("")) return null;
}
/**
* @return ListTake this method
采取这种方法
/**
* @return List of group IDs the person belongs to
*
*/
public List<String> getGroups() {
if (this.getId().equals("")) return null;
}
/**
* @return List