code: def get_mi_cols(obj):
      """Get multiindex cols from a dask object.
  
      Parameters
      ----------
      obj : dask DataFrame
  
      Returns
      -------
      list of pandas index elements
          all column index elements of obj that start with __index__
          i.e., columns that are interpreted as multiindex columns  in the correspondence
      """
      return [x for x in obj.columns if _is_mi_col(x)]
  
imports: import pandas
  from sktime.datatypes._common import _req
  from sktime.datatypes._common import _ret
label_desc: Use image node_id 2 for calling a global function with example usage: get_mi_cols(obj) and returns: unknown