@Override
 public void onBindViewHolder(FermatViewHolder holder, int position) {
   if (holder instanceof AvailableActorsViewHolder) super.onBindViewHolder(holder, position);
   else if (holder instanceof LoadingMoreViewHolder) {
     loadingMoreViewHolder = (LoadingMoreViewHolder) holder;
     loadingMoreViewHolder.progressBar.setVisibility(loadingData ? View.VISIBLE : View.GONE);
   }
 }
 @Override
 public void onBindViewHolder(FermatViewHolder holder, int position) {
   if (!isFooterPosition(position)) super.onBindViewHolder(holder, position);
 }