You have done a lot of testing in your OpenSocial API and now you want to delete all the "Persistence Data". The following method is used to clear the data: var req = OpenSocial.newDataRequest(); req.add(     req.newUpdatePersonAppDataRequest (OpenSocial.DataRequest.PersonId.VIEWER, --, --), "set_data"); req.send(set_callback); The above command has some arguments missing at --. Which of the following set of arguments will complete the above command?

What should you do in order to restrict access to the users?

Which objects are defined in the 'add' method, under 'OpenSocial.DataRequest' namespace?

What will the following code fetch for variable 'xyz' in OpenSocial for Orkut? Var xyz=gadgets.util.getUrlParameters()['gadgetId'];

When you add an application to orkut sandbox by using OpenSocial (v0.7), which type of users can add the application?

Which Roles are defined in OpenSocial API (v0.7)?

Persistence API provides a storage mechanism to save and load data. In which form is the data stored?

Which languages are used for integrating OpenSocial API with Google App Engine?

What do you mean by 'Activity' in OpenSocial API (v0.7)?

Which request is sent to the apiserver when an OpenSocial API wants to call the Google App Engine server for data,?

Which event handler will call this function after the API has been loaded?