TaskFieldHandler::castMembers

private function castMembers(string $fieldName)
{
	if (
		!array_key_exists($fieldName, $this->fields)
		&& $this->taskId
	)
	{
		return;
	}

	if (
		!array_key_exists($fieldName, $this->fields)
		|| !is_array($this->fields[$fieldName])
	)
	{
		$this->fields[$fieldName] = [];
	}

	$members = array_map(function($memberId) {
		return (int) $memberId;
	}, $this->fields[$fieldName]);

	$this->fields[$fieldName] = array_unique($members);
}