Perform a query for Moviequotes

queryForQuotes.m

- (void) _queryForQuotes {
    // #1. Make a query object
    // #2. Use the service to execute the query
    // #3. Use a callback block to handle the response

    GTLQueryMoviequotes* query = [GTLQueryMoviequotes queryForMoviequoteList];
    query.order = @"-last_touch_date_time";
    query.limit = 30;
    [[UIApplication sharedApplication] setNetworkActivityIndicatorVisible:YES];
    [self.service executeQuery:query
             completionHandler:^(GTLServiceTicket *ticket,
                                 GTLMoviequotesMovieQuoteCollection* response,
                                 NSError *error) {
                 self.initialQueryComplete = YES;
                 [[UIApplication sharedApplication] setNetworkActivityIndicatorVisible:NO];
                 if (error != nil) {
                     [self _showErrorDialog:error];
                 } else {
                     self.quotes = [response.items mutableCopy];
                     if (response.nextPageToken != nil) {
                         NSLog(@"There is more data available!  Use %@ to get it!",
                               response.nextPageToken);
                     }
                 }
                 [self.tableView reloadData];
             }];
}