private static int compareStrings(String s1, String s2) {
        if (s1 == null && s2 == null) {
            return 0;
        }

        if (s1 == null /* && s2 != null */) {
            return -1;
        }

        if (
        /* s1 != null && */ s2 == null) {
            return 1;
        }

        return s1.compareTo(s2);
    }

	FMAXNMD F20, F6, F16                       // d068741e
	//TODO VFMAXNMP V3.S2, F2                  // 62c8307e
	//TODO VFMAXNMP V25.S2, V4.S2, V2.S2       // 82c4392e
	//TODO VFMAXNMV V14.S4, F15                // cfc9306e
	//TODO VFMAXP V3.S2, F27                   // 7bf8307e
	//TODO VFMAXP V29.S2, V30.S2, V9.S2        // c9f73d2e
	//TODO VFMAXV V13.S4, F14                  // aef9306e

-      ? __builtin_strcmp (s1, s2)					      \
-      : (__builtin_constant_p (s1) && __string2_1bptr_p (s1)		      \
-	 && (__s1_len = strlen (s1), __s1_len < 4)			      \
-	 ? (__builtin_constant_p (s2) && __string2_1bptr_p (s2)		      \
-	    ? __builtin_strcmp (s1, s2)					      \
-	    : __strcmp_cg (s1, s2, __s1_len))				      \
-	 : (__builtin_constant_p (s2) && __string2_1bptr_p (s2)		      \

    String s1 = new String("a");
    String s2 = new String("a");
    assertEquals(s1, s2); // Stating the obvious.
    assertTrue(s1 != s2); // Stating the obvious.

    multiset.add(s1);
    assertTrue(multiset.contains(s1));
    assertFalse(multiset.contains(s2));
    assertEquals(1, multiset.count(s1));
    assertEquals(0, multiset.count(s2));

    multiset.add(s1);
    multiset.add(s2, 3);

    String s1 = new String("a");
    String s2 = new String("a");
    assertEquals(s1, s2); // Stating the obvious.
    assertTrue(s1 != s2); // Stating the obvious.

    multiset.add(s1);
    assertTrue(multiset.contains(s1));
    assertFalse(multiset.contains(s2));
    assertEquals(1, multiset.count(s1));
    assertEquals(0, multiset.count(s2));

    multiset.add(s1);
    multiset.add(s2, 3);

  }

  public void testUnregister() {
    StringSubscriber s1 = new StringSubscriber();
    StringSubscriber s2 = new StringSubscriber();

    registry.register(s1);
    registry.register(s2);

    registry.unregister(s1);
    assertEquals(1, registry.getSubscribersForTesting(String.class).size());

    registry.unregister(s2);
    assertTrue(registry.getSubscribersForTesting(String.class).isEmpty());
  }

  }

  public void testUnregister() {
    StringSubscriber s1 = new StringSubscriber();
    StringSubscriber s2 = new StringSubscriber();

    registry.register(s1);
    registry.register(s2);

    registry.unregister(s1);
    assertEquals(1, registry.getSubscribersForTesting(String.class).size());

    registry.unregister(s2);
    assertTrue(registry.getSubscribersForTesting(String.class).isEmpty());
  }

pkg p1, method (*Embedded) OnEmbedded()
pkg p1, method (*S2) SMethod(int8, int16, int64)
pkg p1, method (*S2) SMethod //deprecated
pkg p1, method (*T) JustOnT()
pkg p1, method (*T) OnBothTandBPtr()
pkg p1, method (B) OnBothTandBVal()
pkg p1, method (S) StructValueMethod()
pkg p1, method (S) StructValueMethodNamedRecv()
pkg p1, method (S2) StructValueMethod()
pkg p1, method (S2) StructValueMethodNamedRecv()
pkg p1, method (T) OnBothTandBVal()

			return nil, errInvalidCompression(err, compType)
		}
		r = zr
		pr.closer = zr.IOReadCloser()
	case lz4Type:
		r = lz4.NewReader(scannedReader)
	case s2Type:
		r = s2.NewReader(scannedReader)
	case snappyType:
		r = s2.NewReader(scannedReader, s2.ReaderMaxBlockSize(64<<10))
	default:
		return nil, errInvalidCompressionFormat(fmt.Errorf("unknown compression type '%v'", compType))
	}
	pr.processedReader = newCountUpReader(r)

	Checksum   string
}

// Diff - returns error on first difference found in two configs.
func (s1 *ServerSystemConfig) Diff(s2 *ServerSystemConfig) error {
	if s1.Checksum != s2.Checksum {
		return fmt.Errorf("Expected MinIO binary checksum: %s, seen: %s", s1.Checksum, s2.Checksum)
	}

	ns1 := s1.NEndpoints
	ns2 := s2.NEndpoints
	if ns1 != ns2 {
		return fmt.Errorf("Expected number of endpoints %d, seen %d", ns1, ns2)
	}