code: function MessageLogger(app) {
      app.properties[SERVER.Capabilities][MESSAGE_LOGGER.CAPABILITY] = {};
      app.properties[SERVER.Capabilities][MESSAGE_LOGGER.CAPABILITY][SERVER.Version] = packageVersion;
  }
docs: IOPA Middleware
  
  @class MessageLogger
  @this app.properties  the IOPA AppBuilder Properties Dictionary, used to add server.capabilities
  @constructor
  @public