docs: public String getProperty(String strKey)
      {
          String strProperty = this.getMessageProperty(strKey);
          if (strProperty == null)
              strProperty = ((PropertiesField)this.getField(MessageLog.MESSAGE_HEADER_PROPERTIES)).getProperty(strKey);
          if (strProperty == null)
              strProperty = ((PropertiesField)this.getField(MessageLog.MESSAGE_INFO_PROPERTIES)).getProperty(strKey);
          if (strProperty == null)
              strProperty = ((PropertiesField)this.getField(MessageLog.MESSAGE_TRANSPORT_PROPERTIES)).getProperty(strKey);
          return strProperty;
      }