Configuration::addOption

public function addOption(ConfigurationOption $option, $targetOptionCode = null, $isInsertAfter = true)
{
	if ($option->isTemplated() && $this->hasTemplatedOption())
	{
		throw new ArgumentException('Templated option already exists.');
	}

	$uniqueTypes = [
		ConfigurationOption::TYPE_TEMPLATE_TYPE,
		ConfigurationOption::TYPE_TEMPLATE_ID,
	];
	if (in_array($option->getType(), $uniqueTypes, true) && $this->hasOptionsOfType($option->getType()))
	{
		throw new ArgumentException('Option with type `' . $option->getType() . '` already exists.');
	}

	if ($targetOptionCode)
	{
		$index = array_search($this->getOption($targetOptionCode), $this->options);
		if ($isInsertAfter)
		{
			$index++;
		}
		$this->options = array_merge(
			array_slice($this->options, 0, $index),
			[$option],
			array_slice($this->options, $index)
		);
	}
	else
	{
		$this->options[] = $option;
	}
}