text: import os
  import warnings
  
  
  def show_message(old: str, new: str) -> None:
      skip_deprecation = os.environ.get(
          "SLACKCLIENT_SKIP_DEPRECATION"
      )  # for unit tests etc.
      if skip_deprecation:
          return
  
      message = (
          f"{old} package is deprecated. Please use {new} package instead. "
          "For more info, go to https://slack.dev/python-slack-sdk/v3-migration/"
      )
      warnings.warn(message)
  