public boolean removeItemContent(String uid){
  if (!users.isEmpty()) {
    return removeContent(uid,users);
  }
 else   if (!reports.isEmpty()) {
    return removeContent(uid,reports);
  }
 else {
    return removeContent(uid,resources);
  }
}

public boolean removeItemContent ( String uid ) { if ( ! users . isEmpty ( ) ) { return removeContent ( uid , users ) ; } else if ( ! reports . isEmpty ( ) ) { return removeContent ( uid , reports ) ; } else { return removeContent ( uid , resources ) ; } }
removes the content with the given uid . returns true if a content with the given uid existed and was removed .
