Item::getFieldSettings

static function getFieldSettings(array $field, Crm\Service\Factory $factory): ?array
{
	if (array_key_exists('CLASS', $field))
	{
		switch ($field['CLASS'])
		{
			case Crm\Field\Stage::class:
				$settings = ['Groups' => []];
				foreach (static::getCategories($factory) as $category)
				{
					$stages = [];
					foreach (static::getStages($factory, $category) as $stage)
					{
						$stages[$stage['STATUS_ID']] = $stage['NAME'];
					}

					$settings['Groups'][] = [
						'name' => $category->getName(),
						'category_id' => $category->getId(),
						'items' => $stages,
					];
				}

				return $settings;
		}
	}

	return null;
}