laravel5/vendor/nikic/php-parser/lib/PhpParser/Node/Expr/BinaryOp/Plus.php

<?php declare(strict_types=1);

namespace PhpParser\Node\Expr\BinaryOp;

use PhpParser\Node\Expr\BinaryOp;

class Plus extends BinaryOp
{
    public function getOperatorSigil() : string {
        return '+';
    }
    
    public function getType() : string {
        return 'Expr_BinaryOp_Plus';
    }
}