def __init__(self, element_type, path):
        if not element_type is RSpecElements:
            raise InvalidRSpecElement(element_type)
        self.type = element_type
        self.path = path
dataset/ETHPy150Open fp7-ofelia/ocf/ofam/src/src/foam/sfa/rspecs/rspec_elements.py/RSpecElement.__init__/operator `in` -> `is`