Visualize GeospatialPDF data on a Lightspeed map

//First create the model
ILcdModelDecoder decoder =
    new TLcdCompositeModelDecoder(TLcdServiceLoader.getInstance(ILcdModelDecoder.class));
ILcdModel model = decoder.decode("Data/GeospatialPDF/AZ_Bright Angel_314414_1962_62500_geo.pdf");

//Create a layer for the model
ILspLayer layer = createGeospatialPDFLayer(model);

//Add the layer to the Lightspeed view (an ILspView)
view.addLayer(layer);

/**
 * The model decoder can return a single ILcdModel or an ILcdModelTreeNode,
 * depending on the data set.
 *
 * This method can deal with both scenarios
 */
static ILspLayer createGeospatialPDFLayer(ILcdModel model) {
  //The model decoder returns a model tree node when the PDF contains multiple map frames
  //The node itself is just an empty container. We create an empty layer node for that container.
  //Then we loop over the child models (=the actual data), and create layers for those as well
  if (model instanceof ILcdModelContainer) {
    TLspLayerTreeNode node = new TLspLayerTreeNode(model);
    for (int i = 0; i < ((ILcdModelContainer) model).modelCount(); i++) {
      ILcdModel childModel = ((ILcdModelContainer) model).getModel(i);
      //Use recursion to create layers for the child models
      node.addLayer(createGeospatialPDFLayer(childModel));
    }
    return node;
  } else if (TLcdGeospatialPDFModelDescriptor.TYPE_NAME.equals(model.getModelDescriptor().getTypeName())) {
    return TLspRasterLayerBuilder.newBuilder()
                                 .model(model)
                                 .build();
  }
  throw new IllegalArgumentException("Cannot create layer for model " + model);
}