core-bundle/src/Resources/contao/models/PageModel.php
public function getSlugOptions()
	{
		$slugOptions = array('locale'=>$this->language);

		if ($this->validAliasCharacters)
		{
			$slugOptions['validChars'] = $this->validAliasCharacters;
		}

		return $slugOptions;
	}
public function getSlugOptions()
	{
		$slugOptions = array('locale'=>$this->language);

		if ($this->validAliasCharacters)
		{
			$slugOptions['validChars'] = $this->validAliasCharacters;
		}

		return $slugOptions;
	}
Return the slug options

@return array The slug options