Respect\Validation\Factory::prependRulePrefix PHP Метод

    public function prependRulePrefix($rulePrefix)
    {
        array_unshift($this->rulePrefixes, $this->filterRulePrefix($rulePrefix));
    }

 /**
  * @dataProvider provideRulePrefixes
  */
 public function testShouldBeAbleToPrependANewRulePrefix($namespace, $expectedNamespace)
 {
     $factory = new Factory();
     $factory->prependRulePrefix($namespace);
     $currentRulePrefixes = $factory->getRulePrefixes();
     $this->assertContains($expectedNamespace, array_shift($currentRulePrefixes), 'Prepended namespace rule was not found as expected into the prefix list.' . PHP_EOL . sprintf('Prepended "%s", current list is ' . PHP_EOL . '%s', $namespace, implode(PHP_EOL, $factory->getRulePrefixes())));
 }