code: public CreateMBean readCreateMBean(InputStream in) throws ConversionException, IOException, ClassNotFoundException {
          JSONObject json = parseObject(in);
          CreateMBean ret = new CreateMBean();
          ret.objectName = readObjectName(json.get(N_OBJECTNAME));
          ret.className = readStringInternal(json.get(N_CLASSNAME));
          ret.loaderName = readObjectName(json.get(N_LOADERNAME));
          ret.params = readPOJOArray(json.get(N_PARAMS));
          ret.signature = readStringArrayInternal(json.get(N_SIGNATURE));
          ret.useLoader = readBooleanInternal(json.get(N_USELOADER));
          ret.useSignature = readBooleanInternal(json.get(N_USESIGNATURE));
          return ret;
      }
docs: Decode a JSON document to retrieve a CreateMBean instance.
  
  @param in The stream to read JSON from
  @return The decoded CreateMBean instance
  @throws ConversionException If JSON uses unexpected structure/format
  @throws IOException If an I/O error occurs or if JSON is ill-formed.
  @throws ClassNotFoundException If needed class can't be found.
  @see #writeCreateMBean(OutputStream, CreateMBean)