code: def _get_firefox(self):
      options = self._get_wd_options()
  
      options.set_capability("loggingPrefs", {"browser": "SEVERE"})
      options.set_capability("marionette", True)
  
      options.set_preference("browser.download.dir", self.download_path)
      options.set_preference("browser.download.folderList", 2)
      options.set_preference(
          "browser.helperApps.neverAsk.saveToDisk",
          "application/octet-stream",  # this MIME is generic for binary
      )
      return (
          webdriver.Remote(
              command_executor=self._remote_url,
              options=options,
          )
          if self._remote
          else webdriver.Firefox(options=options)
      )
  
imports: import os
  import sys
  import time
  import logging
  import warnings
  import percy
  import requests
  from selenium import webdriver
  from selenium.webdriver.support import expected_conditions
  from selenium.webdriver.common.by import By
  from selenium.webdriver.support.wait import WebDriverWait
  from selenium.webdriver.common.keys import Keys
  from selenium.webdriver.common.action_chains import ActionChains
  from selenium.common.exceptions import WebDriverException, TimeoutException, MoveTargetOutOfBoundsException
  from dash.testing.wait import text_to_equal, style_to_equal, class_to_equal, contains_text, contains_class, until
  from dash.testing.dash_page import DashPageMixin
  from dash.testing.errors import DashAppLoadingError, BrowserError, TestingTimeoutError
  from dash.testing.consts import SELENIUM_GRID_DEFAULT
label_desc: Use image node_id 28 for calling the Browser obj's underlying member method code with example usage: obj._get_firefox() and returns: unknown