Doctrine\Common\DataFixtures\Loader::validateDependencies PHP Метод

    private function validateDependencies($dependenciesClasses)
    {
        $loadedFixtureClasses = array_keys($this->fixtures);
        foreach ($dependenciesClasses as $class) {
            if (!in_array($class, $loadedFixtureClasses)) {
                throw new \RuntimeException(sprintf('Fixture "%s" was declared as a dependency, but it should be added in fixture loader first.', $class));
            }
        }
        return true;
    }