/////Model file Excerpt///////
@Override
    public Pair<? extends IBakedModel, Matrix4f> handlePerspective(
            TransformType cameraTransformType) {
        switch(cameraTransformType)
        {

        case GUI:
            if(Model2d instanceof IPerspectiveAwareModel){
                Pair<? extends IBakedModel, Matrix4f> result =((IPerspectiveAwareModel) Model2d).handlePerspective(cameraTransformType);
                return result;
            }
            return Pair.of(this.Model2d,null);

        default:
            if(Model3d instanceof IPerspectiveAwareModel){
                Pair<? extends IBakedModel, Matrix4f> result =((IPerspectiveAwareModel) Model3d).handlePerspective(cameraTransformType);
                return result;
            }
            return Pair.of(this.Model3d,null);
        }
    }

/////Registry Excerpt///////
if( item == ItemList.BLOWPIPE){
        model2d = new ModelResourceLocation("glassworks:blowpipe2d", "inventory");
        model3d = new ModelResourceLocation("glassworks:blowpipe3d", "inventory");
        ModelLoader.setCustomModelResourceLocation(item, 0,model2d );
        ModelLoader.setCustomModelResourceLocation(item, 0,model3d );
}