/**
  * @throws WrongArgumentException
  * @return boolean
  **/
 public function importValue($value)
 {
     if ($value === null) {
         return parent::importValue(null);
     }
     Assert::isTrue($value instanceof Hstore, 'importValue');
     if (!$this->value instanceof Form) {
         $this->value = $this->makeForm();
     }
     $this->value->import($value->getList());
     $this->imported = true;
     return $this->value->getErrors() ? false : true;
 }