index'] ) ) {
			return $robots;
		}

		$robots['imageindex']        = null;
		$robots['noimageindex']      = null;
		$robots['archive']           = null;
		$robots['noarchive']         = null;
		$robots['snippet']           = null;
		$robots['nosnippet']         = null;
		$robots['max-snippet']       = null;
		$robots['max-image-preview'] = null;
		$robots['max-video-preview'] = null;

		return $robots;
	}

	/**
	 * Sorts the robots array.
	 *
	 * @param array $robots The robots array.
	 *
	 * @return array The sorted robots array.
	 */
	protected function sort_robots( $robots ) {
		\uksort(
			$robots,
			function ( $a, $b ) {
				$order = [
					'index'             => 0,
					'noindex'           => 1,
					'follow'            => 2,
					'nofollow'          => 3,
				];
				$ai    = isset( $order[ $a ] ) ? $order[ $a ] : 4;
				$bi    = isset( $order[ $b ] ) ? $order[ $b ] : 4;

				return ( $ai - $bi );
			}
		);

		return $robots;
	}
}