Component::getComponentDependencies

public function getComponentDependencies(): ?array
{
	$componentDependencies = parent::getComponentDependencies();
	if (is_array($componentDependencies)) {
		$dependencies = $this->getDependencies();

		foreach ($dependencies as $dependency)
		{
			$list = (new Extension($dependency))->getComponentDependencies();
			if ($list !== null) {
				$componentDependencies = array_merge($componentDependencies, $list);
			}
		}

		return array_unique($componentDependencies);
	}

	return null;
}