code: def list_adb_devices_by_usb_id():
      
      out = adb.AdbProxy().devices(['-l'])
      clean_lines = new_str(out, 'utf-8').strip().split('\n')
      results = []
      for line in clean_lines:
          tokens = line.strip().split()
          if len(tokens) > 2 and tokens[1] == 'device':
              results.append(tokens[2])
      return results
docs: List the usb id of all android devices connected to the computer that
      are detected by adb.
  
      Returns:
          A list of strings that are android device usb ids. Empty if there's
          none.