@Override
    public void toData(DataOutput out,
        SerializationContext context) throws IOException {
      super.toData(out, context);
      DataSerializer.writeString(regionPath, out);
      out.writeByte(op.ordinal);
    }
This class processes the message to be delivered to admin node. [This needs to be redesigned and
reimplemented... see 32887]

@since GemFire 5.0
geode-core/src/main/java/org/apache/geode/admin/internal/SystemMemberCacheEventProcessor.java