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./othercms/xenForo 2.2.8/src/vendor/authy/php/Authy.php
<?php
$filename
= '/vendor/autoload.php';
$paths = [__DIR__.$filename, __DIR__.'/../../..'.$filename];
foreach(
$paths as $path){
    if (
file_exists($path))
        require
$path;
}

class
Authy_Api extends Authy\AuthyApi {}

?>