SmartInvoice::getFields

public function getFields(): array
{
	if($this->fields === null)
	{
		$fields = parent::getFields();

		$fields[Item::FIELD_NAME_BEGIN_DATE]['TITLE'] = $this->getFactory()->getFieldCaption(Item::FIELD_NAME_BEGIN_DATE);
		$fields[Item::FIELD_NAME_CLOSE_DATE]['TITLE'] = $this->getFactory()->getFieldCaption(Item::FIELD_NAME_CLOSE_DATE);

		foreach ($this->getFieldsAliases() as $alias => $fieldName)
		{
			if (isset($fields[$fieldName]))
			{
				$fields[$alias] = [
					'TITLE' => $fields[$fieldName]['TITLE'],
					'VALUE' => $fieldName,
					'OPTIONS' => [
						'COPY' => $fieldName,
					]
				];
			}
		}

		$this->fields = $fields;
	}

	return $this->fields;
}