text: """
  Defines callbacks to be executed on a thread or by scheduling it
  on a running bokeh server.
  """
  import param
  
  from .io.callbacks import PeriodicCallback # noqa
  
  param.main.param.warning(
      "panel.callbacks module is deprecated and has been moved to "
      "panel.io.callbacks. Update your import as it will be removed "
      "in the next minor release."
  )
  