old_contents: """
  This module contains a customized version of pyvirtualdisplay.
  These helper methods SHOULD NOT be called directly from tests.
  """
  from seleniumbase.virtual_display.abstractdisplay import AbstractDisplay
  from seleniumbase.virtual_display.xephyr import XephyrDisplay
  from seleniumbase.virtual_display.xvfb import XvfbDisplay
  from seleniumbase.virtual_display.xvnc import XvncDisplay
  
  
  class Display(AbstractDisplay):
      """
      Common class
  
      :param color_depth: [8, 16, 24, 32]
      :param size: screen size (width,height)
      :param bgcolor: background color ['black' or 'white']
      :param visible: True -> Xephyr, False -> Xvfb
      :param backend: 'xvfb', 'xvnc' or 'xephyr', ignores ``visible``
      :param xauth: If a Xauthority file should be created.
      """
  
      def __init__(
          self,
          backend=None,
          visible=False,
          size=(1024, 768),
          color_depth=24,
          bgcolor="black",
          use_xauth=False,
          **kwargs,
      ):
          self.color_depth = color_depth
          self.size = size
          self.bgcolor = bgcolor
          self.screen = 0
          self.process = None
          self.display = None
          self.visible = visible
          self.backend = backend
  
          if not self.backend:
              if self.visible:
                  self.backend = "xephyr"
              else:
                  self.backend = "xvfb"
  
          self._obj = self.display_class(
              size=size, color_depth=color_depth, bgcolor=bgcolor, **kwargs
          )
          AbstractDisplay.__init__(self, use_xauth=use_xauth)
  
      @property
      def display_class(self):
          assert self.backend
          if self.backend == "xvfb":
              cls = XvfbDisplay
          if self.backend == "xvnc":
              cls = XvncDisplay
          if self.backend == "xephyr":
              cls = XephyrDisplay
          cls.check_installed()
          return cls
  
      @property
      def _cmd(self):
          self._obj.display = self.display
          return self._obj._cmd
  
new_contents: """
  This module contains a customized version of pyvirtualdisplay.
  These helper methods SHOULD NOT be called directly from tests.
  """
  from seleniumbase.virtual_display.abstractdisplay import AbstractDisplay
  from seleniumbase.virtual_display.xephyr import XephyrDisplay
  from seleniumbase.virtual_display.xvfb import XvfbDisplay
  from seleniumbase.virtual_display.xvnc import XvncDisplay
  
  
  class Display(AbstractDisplay):
      """
      Common class
  
      :param color_depth: [8, 16, 24, 32]
      :param size: screen size (width,height)
      :param bgcolor: background color ['black' or 'white']
      :param visible: True -> Xephyr, False -> Xvfb
      :param backend: 'xvfb', 'xvnc' or 'xephyr', ignores ``visible``
      :param xauth: If a Xauthority file should be created.
      """
  
      def __init__(
          self,
          backend=None,
          visible=False,
          size=(1024, 768),
          color_depth=24,
          bgcolor="black",
          use_xauth=False,
          **kwargs
      ):
          self.color_depth = color_depth
          self.size = size
          self.bgcolor = bgcolor
          self.screen = 0
          self.process = None
          self.display = None
          self.visible = visible
          self.backend = backend
  
          if not self.backend:
              if self.visible:
                  self.backend = "xephyr"
              else:
                  self.backend = "xvfb"
  
          self._obj = self.display_class(
              size=size, color_depth=color_depth, bgcolor=bgcolor, **kwargs
          )
          AbstractDisplay.__init__(self, use_xauth=use_xauth)
  
      @property
      def display_class(self):
          assert self.backend
          if self.backend == "xvfb":
              cls = XvfbDisplay
          if self.backend == "xvnc":
              cls = XvncDisplay
          if self.backend == "xephyr":
              cls = XephyrDisplay
          cls.check_installed()
          return cls
  
      @property
      def _cmd(self):
          self._obj.display = self.display
          return self._obj._cmd
  
subject: Update formatting