private void setProfileImage(final ActivityViewHolder holder, final ParcelableUser user) {
   if (mDisplayProfileImage) {
     mProfileImageLoader.displayProfileImage(holder.profile_image, user.profile_image_url);
   } else {
     holder.profile_image.setImageDrawable(null);
   }
 }
 private void setUserProfileImages(final ActivityViewHolder holder, final ParcelableUser[] users) {
   final int length =
       users != null ? Math.min(holder.activity_profile_images.length, users.length) : 0;
   final boolean should_display_images = mDisplayProfileImage && length > 0;
   holder.activity_profile_image_container.setVisibility(
       should_display_images ? View.VISIBLE : View.GONE);
   if (!should_display_images) return;
   for (int i = 0; i < length; i++) {
     final ImageView activity_profile_image = holder.activity_profile_images[i];
     final String profile_image_url = users[i].profile_image_url;
     mProfileImageLoader.displayProfileImage(activity_profile_image, profile_image_url);
   }
 }