@Override public boolean isTimeValid(){
  if (conditions == null) {
    return true;
  }
 else {
    return conditions.checkDateValidity(currentTimeMillis());
  }
}

@ Override public boolean isTimeValid ( ) { if ( conditions == null ) { return true ; } else { return conditions . checkDateValidity ( currentTimeMillis ( ) ) ; } }
gets the validity of the assertion evaluating its conditions if specified .
