When using the TLcdDWGModelDecoder
the whole DWG or DFX file is decoded into a single model.
If you want to visualize each AutoCAD layer in a different layer on your map, you should use the
TLcdDWGModelListDecoder
instead.
This model decoder will create a single model per AutoCAD layer, making it easy to create a single map layer for each AutoCAD
layer.