/**
  * @return array
  */
 public function getParameters()
 {
     $params = [];
     if (is_array($v = $this->value->getValue()) && $this->value->getOperator() === 'BETWEEN') {
         foreach ($v as $index => $value) {
             $params[$this->value->getParameterKey($index)] = $value;
         }
     } elseif ($this->value->getOperator() === 'IS') {
         // conitnue...
     } elseif ($this->value->getOperator() === 'INSTANCE OF') {
         // conitnue...
     } else {
         $params[$this->value->getParameterKey()] = $this->value->getValue();
     }
     return $params;
 }