def _add_to_class(self, name, method):
        if hasattr(self._element_cls, name):
            return
        setattr(self._element_cls, name, method)
Return an interval not including the left boundary.
dataset/ETHPy150Open python-openxml/python-docx/docx/oxml/xmlchemy.py/_BaseChildElement._add_to_class--crossover with--dataset/ETHPy150Open sympy/sympy/sympy/sets/sets.py/Interval.Lopen