def extendFstab(self, src, fs, ro):
        dst = pjoin(self._rootfs, fs)

        if not os.path.isabs(src):
            raise ValueError('Source path has to be absolute.')

        if not os.path.exists(src):
            raise ValueError('Source path does not exist.')

        if not os.path.exists(dst):
            raise ValueError('Destination path does not exist.')

        self._fstabExt.append((src, dst, ro))
Used to find the closest point to an unreproducible Color is unreproducible
dataset/ETHPy150Open rapyuta/rce/rce-core/rce/util/container.py/Container.extendFstab--crossover with--dataset/ETHPy150Open sontek/bulby/bulby/color.py/get_closest_point_to_point