def verifyCurrentContext(self, tokens, index):
        if not self.currentStore:
            msg = "ParseError: Building verb '%s'. No current store" % (tokens)
            raise excepting.ParseError(msg, tokens, index)

        if not self.currentFramer:
            msg = "ParseError: Building verb '%s'. No current framer" % (tokens)
            raise excepting.ParseError(msg, tokens, index)

        if not self.currentFrame:
            msg = "ParseError: Building verb '%s'. No current frame" % (tokens)
            raise excepting.ParseError(msg, tokens, index)

        return
Creates a URL to request an AuthSub token to access Google services.
dataset/ETHPy150Open ioflo/ioflo/ioflo/base/building.py/Builder.verifyCurrentContext--crossover with--dataset/ETHPy150Open acil-bwh/SlicerCIP/Scripted/attic/PicasaSnap/gdata/service.py/GenerateAuthSubRequestUrl