/**
  * Gets or sets child
  *
  * @param  string $name
  * @param  mix $value
  * @return string|self
  */
 public function setChild($name, $value)
 {
     if ($value instanceof SearchFilterCondition) {
         $this->removeChild('conds')->removeChild('cond');
     }
     return parent::setChild($name, $value);
 }