public function allowSelectMultipleItems()
    {
        $flagOrCallback = $this->allowSelectMultipleItems;

        return is_callable($flagOrCallback) ? (bool) $flagOrCallback() : (bool) $flagOrCallback;
    }
public function allowSelectMultipleItems()
    {
        $flagOrCallback = $this->allowSelectMultipleItems;

        return is_callable($flagOrCallback) ? (bool) $flagOrCallback() : (bool) $flagOrCallback;
    }
public function allowSelectMultipleItems ( ) { $ flagOrCallback = $ this -> allowSelectMultipleItems ; return is_callable ( $ flagOrCallback ) ? ( bool ) $ flagOrCallback ( ) : ( bool ) $ flagOrCallback ; }
Are multiple selections allowed?

@return bool
Are multiple selections allowed?