/**
* Determines if a string starts with a specified substring, searching case-insensitively.
*
* As a special case, the method returns `true` if the searched substring is empty.
*
* @param string $withString The searched substring.
*
* @return bool `true` if the string starts with the substring specified, ignoring the letter case of the
* characters, and `false` otherwise.
*/
public function startsWithCi($withString)
{
return CUString::startsWithCi($this, $withString);
}
