##### BrowserType.launch() - `BrowserType.launch()` -> [[class Browser|Browser]] - - `args`: `List[str] (optional)` - - `channel`: `str (optional)` - - `chromium_sandbox`: `bool (optional)` - - `devtools`: `bool (optional)` - - `downloads_path`: `Union[str, pathlib.Path] (optional)` - - `env`: `Dict[str, str|float|bool] (optional)` - - `executable_path`: `Union[str, pathlib.Path] (optional)` - - `firefox_user_prefs`: `Dict[str, str|float|bool] (optional)` - - `handle_sighup`: `bool (optional)` - - `handle_sigint`: `bool (optional)` - - `handle_sigterm`: `bool (optional)` - - `headless`: `bool (optional)` - - `ignore_default_args`: `bool|List[str] (optional)` - - `proxy`: `Dict (optional)` - - `slow_mo`: `float (optional)` - - `timeout`: `float (optional)` - - `traces_dir`: `Union[str, pathlib.Path] (optional)` -