def to_filename(self, out_path):
        self.meta_ext.check_valid()
        self.nii_img.to_filename(out_path)
make sure we don't put 'IF NOT EXIST' in update statements
dataset/ETHPy150Open moloney/dcmstack/src/dcmstack/dcmmeta.py/NiftiWrapper.to_filename--crossover with--dataset/ETHPy150Open datastax/python-driver/tests/integration/cqlengine/test_ifnotexists.py/IfNotExistsInstanceTest.test_if_not_exists_is_not_include_with_query_on_update