 
   private let fetchActivitiesResponse: [Activity]?
   private let fetchActivitiesError: ErrorEnvelope?
+
+  private let fetchBackingResponse: Backing
 
   private let fetchCategoriesResponse: CategoriesEnvelope?
 

                facebookConnectError: ErrorEnvelope? = nil,
                fetchActivitiesResponse: [Activity]? = nil,
                fetchActivitiesError: ErrorEnvelope? = nil,
                fetchCategoriesResponse: CategoriesEnvelope? = nil,
                fetchCommentsResponse: [Comment]? = nil,
                fetchCommentsError: ErrorEnvelope? = nil,

    ]

    self.fetchActivitiesError = fetchActivitiesError

    self.fetchBackingResponse = fetchBackingResponse

    self.fetchCategoriesResponse = fetchCategoriesResponse ?? (.template
      |> CategoriesEnvelope.lens.categories .~ [
