def __add__(self, val):
        if isinstance(val, Resource):
            for res in val._resource:
                if res not in self._resource:
                    self._resource.append(res)
        else:
            self.append_internal(val)
        return self
dataset/ETHPy150Open goFrendiAsgard/kokoropy/kokoropy/model.py/Resource.__add__/original