public static void updateSupportedClassesMap(String dsClassName, String supportedClassName) {
    SerializerAttributesHolder holder = dsClassesToHolders.get(dsClassName);
    if (holder != null) {
      supportedClassesToHolders.putIfAbsent(supportedClassName, holder);
    }
  }
During client/server handshakes the server may send a collection of DataSerializers and the
classes they support. The DataSerializers are registered as "holders" to avoid loading the
actual classes until they're needed. This method registers the names of classes supported by
the DataSerializers

@param map The classes returned by DataSerializer.supportedClasses()
geode-core/src/main/java/org/apache/geode/internal/InternalDataSerializer.java