FirebaseRecyclerAdapter<Viaje,ListaViajes.MyHolder> firebaseRecyclerAdapter = new FirebaseRecyclerAdapter<Viaje, MyHolder>(options) {
        @Override
        protected void onBindViewHolder(@NonNull final MyHolder holder, int position, @NonNull Viaje model) {

            storageReference = FirebaseStorage.getInstance().getReference();
            StorageReference pathRef = storageReference.child("images").child(model.getUserName()+".jpeg");

            holder.setSitio(model.getSitio().toString());
            holder.setPruebaImagen(pathRef.getDownloadUrl().toString());

            });
        }

public static class MyHolder extends  RecyclerView.ViewHolder{
    View mView;
    public MyHolder(View itemView)
    {
        super(itemView);
        mView=itemView;
    }
    public void setPruebaImagen(String url)
    {
        ImageView imageView = mView.findViewById(R.id.image_view);
        GlideUtil.loadProfilePhoto(url,imageView );
    }
}