@Test
void getIfKeyAndValueDefined_whenKeyHasEmptyStringValue_thenReturnsParserWithoutValue() {

    String testValue = "";
    Config<TestConfig> config =  SimpleConfigBuilder.create(TestConfig.class)
            .put(TestConfig.FOO, testValue)
            .buildWrapped();
    assertThat(config.getIfKeyAndValueDefined(TestConfig.FOO).asString().isPresent()).isFalse();
}