@startuml download_model
class ModelDownloader {
  -model_file_path : string
  -model_name : string
  -model_dir : string
  +model_file_exists_and_valid(model_file_path : string) : boolean
  +write_model_path_to_txt_file(model_file_path : string) : void
  +download_hf_model() : void
  +download_gguf_model() : void
  +download_model() : void
}
@enduml