1.OnlyMethodReferencesButVerbose.java

        // Convert annotations on each method's params
        clazz.getMethods().stream()
                .map(CallableDeclaration::getParameters)
                .flatMap(Collection::stream)
                .map(Parameter::getAnnotations)
                .flatMap(Collection::stream)
                .forEach(converter);

2.WithLambdasShortButSlightNoise.java

        // Convert annotations on each method's params
        clazz.getMethods().stream()
                .flatMap(method -> method.getParameters().stream())
                .flatMap(parameter -> parameter.getAnnotations().stream())
                .forEach(converter);

3.ThisWouldBeGreat.java

// Assumes Stream has a method signature similar to:
//     default <R> Stream<R> flatMap(Collection<? extends R> collection) {
//        return collection.stream();
//    }

        // Convert annotations on each method's params
        clazz.getMethods().stream()
                .flatMap(CallableDeclaration::getParameters)
                .flatMap(Parameter::getAnnotations)
                .forEach(converter);