Symfony\Component\Form\FieldGroup::isBoundWithExtraFields PHP Метод

    public function isBoundWithExtraFields()
    {
        // TODO: integrate the field names in the error message
        return count($this->extraFields) > 0;
    }

 public function testInvalidIfBoundWithExtraFields()
 {
     $group = new FieldGroup('author');
     $group->add($this->createValidMockField('firstName'));
     $group->add($this->createValidMockField('lastName'));
     $group->bind(array('foo' => 'bar', 'firstName' => 'Bernhard', 'lastName' => 'Potencier'));
     $this->assertTrue($group->isBoundWithExtraFields());
 }