Extension::getIncludeExpression

public function getIncludeExpression($callbackName = 'onExtensionsLoaded'): string
{
	$relativePath = $this->getPath() . 'extension.js';
	$localizationPhrases = $this->getLangDefinitionExpression();
	$content = "n//extension '{$this->name}'n";
	$content .= "{$localizationPhrases}n";
	$content .= "loadScript("{$relativePath}", false, {$callbackName});";

	return $content;
}