             let queryHelper = QueryHelper(query: query)
             operation = index.searchDisjunctiveFaceting(query, disjunctiveFacets: state.disjunctiveFacets, refinements: queryHelper.buildFacetRefinementsForDisjunctiveFaceting(), completionHandler: completionHandler)
         }
+        operation.name = "\(index) #\(state.sequenceNumber): \(query)"
         self.pendingRequests.append(operation)
+        DEBUG_LOG("START \(operation.name!)")
         
         // Schedule a task to check if the request is slow.
         if let threshold = slowRequestThreshold {

        }
    }
}

        var requestCompleted = false
        let completionHandler: CompletionHandler = { (content: [String: AnyObject]?, error: NSError?) in
            requestCompleted = true
            DEBUG_LOG("RECVD \(operation.name!)")
            
            // Remove request from list of pending requests.
            // Also cancel and remove all previous requests (as this one is deemed more recent).
            if let index = self.pendingRequests.indexOf(operation) {
                for i in 0..<index {
                    DEBUG_LOG("CANCL \(self.pendingRequests[i].name!)")
                    self.pendingRequests[i].cancel()
                }
                self.pendingRequests.removeRange(0...index)
