@abstractproperty
    def default_config(self):
        raise NotImplementedError("default_config has not been implemented")
warning for trailing commas before closing array
dataset/ETHPy150Open edx/bok-choy/bok_choy/a11y/a11y_audit.py/A11yAudit.default_config--crossover with--dataset/ETHPy150Open google/closure-linter/closure_linter/trailing_comma_test.py/TrailingCommaTest.testGetTrailingCommaArray