def getActivityStream(user,scope,last_id=nil)
      method = 'getActivityStream'
      type = ActivityStream
      args = {:user=>user,:scope=>scope}
      args[:last_id] = last_id if last_id
      auth = user
      return_object type,method,args,auth
    end
def getActivityStream(user,scope,last_id=nil)
      method = 'getActivityStream'
      type = ActivityStream
      args = {:user=>user,:scope=>scope}
      args[:last_id] = last_id if last_id
      auth = user
      return_object type,method,args,auth
    end
Get the activity events for a user, a user's friends, or
 everyone on Rdio.