class Users
{
    public static function loadValidatorMetadata(ClassMetadata $metadata)
    {
        $metadata->addPropertyConstraint('username', new Assert\NotBlank());
        $metadata->addPropertyConstraint('password', new Assert\NotBlank());
        $metadata->addPropertyConstraint('username', new Assert\Length(array(
            'min' => 6,
            'max' => 12
        )));
        
        $metadata->addPropertyConstraint('password', new Assert\Length(array(
            'min' => 6
        )));
        
        $metadata->addGetterMethodConstraint('password', 'passwordLegal', new Assert\IsTrue(array(
            'message' => 'The password cannot match your username',
            'groups' => array(
                'Strict'
            )
        )));
        $metadata->setGroupSequence(array(
            'Users',
            'Strict'
        ));
    }

    public function passwordLegal()
    {
        die("I am passwordLegal");
        return $this->password !== $this->username;
    }
}