How import others models for train?

Hello Nvidia comunity

I am trying my first project with this framework. I have done the “2 days tutorial” for Object Detection, in this tutorial we use a detectnet in prototxt format ready for the example. But what I want really is use the pretrained SSD_MobileNet and the documentation is not clear about this.

I really would appreciate some explains of how get this.

I am a pytorch programmer but i think use caffe is a good idea (because is what the tutorial use).:)