final byte[] data3 = "abcde".getBytes();
        assertEquals("YWJjZGU=", Base64Util.encode(data3));

        // Test case 4: No padding
        final byte[] data4 = "abcdef".getBytes();
        assertEquals("YWJjZGVm", Base64Util.encode(data4));
    }

        RequestData data3 = RequestDataBuilder.newRequestData().method("post").build();
        assertEquals(Method.POST, data3.getMethod());

        RequestData data4 = RequestDataBuilder.newRequestData().method("HEAD").build();
        assertEquals(Method.HEAD, data4.getMethod());
    }

    public void test_methodWithStringUnknown() {
        // Test method(String) with unknown method defaults to GET