<?php
/**
 * @template T
 *
 * @psalm-param string|null $nullable
 * @psalm-param T $exception
 *
 * @psalm-throws T
 */
function expect(?string $nullable, Exception $exception) 
{
    if ($nullable === null) {
    	throw $exception;
    }
    
    return $nullable;
}
expect('test', new RuntimeException('Test is null'));