Models of April Tag in Gazebo

Hi, I was trying to run simulations in Gazebo but realized that there are no April Tags. While I have seen [this](http://answers.gazebosim.org/question/17945/models-of-april-tags-36h11-series/) and [this](https://github.com/mikaelarguedas/gazebo_models), they either don't provide anything for generating April Tag models or provide scripts instead of models. I would like to know if there is a way to directly get the model SDF file in gazebo ? Thanks!