Misinterpreting Java 8 default methods

[Timotei Dolean]

It seems that having default methods will trigger an exception that cfg4j doesn't find that configuration. However, in my opinion we should ignore those kind of methods, here's an example that throws:

public interface Configuration {
    string apiKey();

    default String stringRepresentation() {
        return String.format(
            "apiKey=%s", apiKey);
    }
}

And the relevant exception:

Exception in thread "main" java.util.NoSuchElementException: No configuration with key: stringRepresentation
	at org.cfg4j.provider.SimpleConfigurationProvider.getProperty(SimpleConfigurationProvider.java:94)
	at org.cfg4j.provider.SimpleConfigurationProvider.getProperty(SimpleConfigurationProvider.java:76)
	at org.cfg4j.provider.BindInvocationHandler.invoke(BindInvocationHandler.java:61)
	at com.sun.proxy.$Proxy0.stringRepresentation(Unknown Source)
	at sun.reflect.NativeMethodAccessorImpl.invoke0(Native Method)
	at sun.reflect.NativeMethodAccessorImpl.invoke(NativeMethodAccessorImpl.java:62)
	at sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:43)
	at java.lang.reflect.Method.invoke(Method.java:498)
	at org.cfg4j.validator.BindingValidator.validate(BindingValidator.java:51)
	at org.cfg4j.provider.SimpleConfigurationProvider.bind(SimpleConfigurationProvider.java:128)
	at org.cfg4j.provider.SimpleConfigurationProvider.bind(SimpleConfigurationProvider.java:106)

What do you think?