Description:
------------
The methods Normalizer::isNormalized() and Normalizer::normalize() expect the same parameters, input (required) and form (optional).

http://php.net/manual/en/normalizer.isnormalized.php
http://php.net/manual/en/normalizer.normalize.php

However the number of required parameters returned by reflection is wrong (it returns 3).

Test script:
---------------
<?php

$rm = new ReflectionMethod(Normalizer::class, 'isNormalized');
var_dump($rm->getNumberOfParameters());
var_dump($rm->getNumberOfRequiredParameters());
$rm = new ReflectionMethod(Normalizer::class, 'normalize');
var_dump($rm->getNumberOfParameters());
var_dump($rm->getNumberOfRequiredParameters());

Expected result:
----------------
int(2)
int(1)
int(2)
int(1)

Actual result:
--------------
int(3)
int(3)
int(3)
int(3)