@Test
    public void testEmptyXmlFieldException() throws Exception {
        try {
            final PaymentResponse response = deserializeFromXml(
                    "src/test/java/ru/arsenalpay/api/unit/support/api_empty_field_response.xml"
            );
            System.out.println(response);
            assertNotNull(response);
            assertNull(response.getPayerId());
            assertEquals(567456755678L, response.getTransactionId().longValue());
            assertEquals(123456L, response.getRecipientId().longValue());
            assertTrue(new Double(52.40).equals(response.getAmount()));
            assertEquals("OK", response.getMessage());
        } catch (Exception e) {
            e.printStackTrace(System.err);
            fail(e.getMessage());
        }
    }