Description:
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SoapServer:setClass is variadic but ReflectionMethod::isVariadic returns false for this method.

http://php.net/manual/en/soapserver.setclass.php

Test script:
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<?php
$rm = new ReflectionMethod('SoapServer', 'setClass');
var_dump($rm->isVariadic());
var_dump($rm->getParameters()[1]->isVariadic());

Expected result:
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bool(true)
bool(true)

Actual result:
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bool(false)
bool(false)