code: def __add__(self, other: SplitCondition):
      return CombinedCondition(
          list(self.variables.keys()), self.conditions + [other]
      )
  
file_path: imodels/imodels/experimental/bartpy/splitcondition.py
imports: from operator import le, gt
  from typing import Callable, List, Optional, Union
  import numpy
label_desc: Use image node_id 3 for calling the CombinedCondition obj's underlying member method code with example usage: obj.__add__(other) and returns: CombinedCondition