class HistoryKey implements Serializable {

    @Override
    public String toString() {
        final StringBuilder sb = new StringBuilder();
        sb.append("HistoryKey");
        sb.append("{type='").append(type).append('\'');
        sb.append(", mBean=").append(mBean);
        sb.append(", secondary='").append(secondary).append('\'');
        sb.append(", path='").append(path).append('\'');
        sb.append(", target='").append(target).append('\'');
        sb.append('}');
        return sb.toString();
    }

      HistoryKey(JmxReadRequest pJmxRequest);
      HistoryKey(JmxWriteRequest pJmxReq);
      HistoryKey(JmxExecRequest pJmxReq);
    public  HistoryKey(String pMBean, String pOperation, String pTarget);
    public  HistoryKey(String pMBean, String pAttribute, String pPath, String pTarget);

}