protected function isMultipleValid()
    {
        if (!$this->isRendering()) {
            return empty($this->invalidInstances);
        }
        
        return ! in_array($this->getInstance(), $this->invalidInstances);
    }
protected function isMultipleValid()
    {
        if (!$this->isRendering()) {
            return empty($this->invalidInstances);
        }
        
        return ! in_array($this->getInstance(), $this->invalidInstances);
    }
protected function isMultipleValid ( ) { if ( ! $ this -> isRendering ( ) ) { return empty ( $ this -> invalidInstances ) ; } return ! in_array ( $ this -> getInstance ( ) , $ this -> invalidInstances ) ; }
Validates when input is set to be multiple

@return bool
Validates when input is set to be multiple