Cielo\Transaction::setHolder PHP Method

    public function setHolder(Holder $holder)
    {
        $this->holder = $holder;
        $bin = substr($holder->getCreditCardNumber(), 0, 6);
        if (!empty($bin)) {
            $this->setBin($bin);
        }
    }

 public function testSetHolder_shouldBeSuccess_whenHolderHasToken()
 {
     $holder = new Holder('TuS6LeBHWjqFFtE7S3zR052Jl/KUlD+tYJFpAdlA87E=');
     $this->transaction->setHolder($holder);
 }