Method function

src/main/java/field/utility/Conversions.java:203–213

(Function<A, B> f)

        }
        return true;
    }

    static public <A, B> Pair<List<Class>, List<Class>> function(Function<A, B> f) {
        Type inter = f.getClass()
                .getGenericInterfaces()[0];

        if (inter instanceof Class)
            throw new IllegalArgumentException("alas, you can't pass in a lambda to function <" + inter + ">");

        Type[] at = ((ParameterizedType) inter).getActualTypeArguments();

        return new Pair<>(linearize(at[0]), linearize(at[1]));
    }