/**
* Removes all occurrences of a substring from a string, searching case-sensitively, and returns the new string,
* optionally reporting the number of removals made.
*
* @param string $what The searched substring.
* @param reference $quantity **OPTIONAL. OUTPUT.** After the method is called with this parameter provided, the
* parameter's value, which is of type `int`, indicates the number of removals made.
*
* @return CUStringObject The resulting string.
*/
public function remove($what, &$quantity = null)
{
return CUString::remove($this, $what, $quantity);
}