https://airflow.apache.org/docs/apache-airflow/stable/configurations-ref.html#store-dag-code

![Captura de pantalla 2021-05-26 a las 17 47 56](https://user-images.githubusercontent.com/11339132/119691160-a2049a00-be4a-11eb-8f55-0ad2c6117620.png)

The Default is True or None?
tests/core/test_configuration.py
'''
        test_conf = AirflowConfigParser(default_config=parameterized_config(test_config_default))
        test_conf.read_string(test_config)
        test_conf.sensitive_config_values = test_conf.sensitive_config_values | {
            ('test', 'sql_alchemy_conn'),
        }
        assert 'sqlite:////Users/airflow/airflow/airflow.db' == test_conf.get('test', 'sql_alchemy_conn')
    def test_getboolean(self):
        """Test AirflowConfigParser.getboolean"""
        test_config = """
[type_validation]
key1 = non_bool_value
[true]
key2 = t
key3 = true
key4 = 1
[false]
key5 = f
key6 = false
key7 = 0
[inline-comment]
key8 = true #123
"""
        test_conf = AirflowConfigParser(default_config=test_config)
        with pytest.raises(
            AirflowConfigException,
            match=re.escape(
                'Failed to convert value to bool. Please check "key1" key in "type_validation" section. '
                'Current value: "non_bool_value".'
            ),