code: def _get_selection_expr_for_stream_value(self, **kwargs):
      index = kwargs.get("index")
      index_cols = kwargs.get("index_cols")
      if index is None or index_cols is None:
          return None, None, None
      return self._get_index_selection(index, index_cols)
  
imports: import sys
  import numpy
  import pandas
  from ..core import Dataset, NdOverlay, util
  from ..streams import Lasso, Selection1D, SelectionXY
  from ..util.transform import dim
  from .annotation import HSpan, VSpan
label_desc: Use image node_id 4 for calling the SelectionIndexExpr obj's underlying member method code with example usage: obj._get_selection_expr_for_stream_value() and returns: self, None,  None,  None