def set_rules_file(self, path=None):
        if path:
            self.rules_file = os.path.abspath(path)
Return a |_Manifest| instance for the extracted OPC package at
dataset/ETHPy150Open edx/bok-choy/bok_choy/a11y/a11y_audit.py/A11yAuditConfig.set_rules_file--crossover with--dataset/ETHPy150Open python-openxml/opc-diag/features/steps/step_data.py/_Manifest.from_dir