code: def ExpandingWindowSplitter(fh=1, initial_window=10, step_length=1):
      """Legacy export of Expanding window splitter.
  
      DEPRECATED - use sktime.split.ExpandingWindowSplitter instead.
      """
      from warnings import warn
  
      from sktime.split import ExpandingWindowSplitter as _EWSplitter
  
      warn(
          "WARNING - the old location of ExpandingWindowSplitter in "
          "sktime.forecasting.model_selection is deprecated and is scheduled for "
          "imminent removal in a MINOR version. "
          "Please update any import statements to "
          "from sktime.split import ExpandingWindowSplitter.",
          DeprecationWarning,
      )
  
      return _EWSplitter(
          fh=fh, initial_window=initial_window, step_length=step_length
      )
  
label_desc: Use image node_id 2 for calling a global function with example usage: ExpandingWindowSplitter(fh, initial_window, step_length) and returns: _EWSplitter