}
/**
- * @param int $i
- * @return string|null
+ * @param int|null $i
+ * @return string[]|string|null
*/
public function getClosing( $i = null ) {
if ( $i === null ) {
protected $bailoutComplexity = 0;
/**
- * Constructor.
* Computes diff between sequences of strings.
*
* @param string[] $from_lines An array of strings.