Draw multiple trees on top of one another.
Arguments
- phylos
 one or more phylogenies, must be of class
multiPhylo- ...
 options to be passed to
phangorn's densiTree function
Examples
if (beautier::is_on_ci() && is_beast2_installed()) {
  beastier::remove_beaustier_folders()
  beastier::check_empty_beaustier_folders()
  inference_model <- create_test_inference_model()
  beast2_options <- create_beast2_options()
   out <- bbt_run_from_model(
    get_babette_path("anthus_aco.fas"),
    inference_model = inference_model,
    beast2_options = beast2_options
  )
  bbt_delete_temp_files(
    inference_model = inference_model,
    beast2_options = beast2_options
  )
  plot_densitree(out$anthus_aco_trees)
  # Clean up temporary files created by babette
  bbt_delete_temp_files(
    inference_model = inference_model,
    beast2_options = beast2_options
  )
  beastier::remove_beaustier_folders()
  beastier::check_empty_beaustier_folders()
}
