public function testChangesToExtendedDataCanBeMadeAfterCreation()
{
$instruction = new PaymentInstruction(123, 'EUR', 'foo', $data = new ExtendedData());
$instruction->getExtendedData()->set('foo', 'bar');
$instruction->onPreSave();
$this->assertNotSame($data, $instruction->getExtendedData());
}
