Enable Help In WCF Service

Help will provide the all the input and output parameter information of service method. to enable help in WCF service add following code into web.config.
<endpointBehaviors>
        <behavior name="WebHttpBehavior">
          <webHttp automaticFormatSelectionEnabled="false" defaultOutgoingResponseFormat="Json"
                   defaultBodyStyle="Bare" helpEnabled="true"/>
        </behavior>
      </endpointBehaviors>
After address put "/" then help for information about the method. for example http://localhost:51013/TestService/Service.svc/help