code: def side_by_to_next(self, data):
      side_by = dict((k, data[k]) for k in self.side_by_cols)
      return self.data_to_next(side_by)
  
label_desc: Use image node_id 4 for calling the SingleInputMixin obj's underlying member method code with example usage: obj.side_by_to_next(data) and returns: self