Document the order of AutoValue fields, taken from superclasses and interfaces

[leventov]

public class AutoValueTest {

    public static void main(String[] args) {
        System.out.println(
                new AutoValue_AutoValueTest_Sub(1.0f, 'c', 2L, 1, "s", null));
    }

    static interface Interface1 {
        float getFloat();
        Object getObject();
    }

    static interface Interface2 {
        float getFloat();
        char getChar();
    }

    static interface Interface3 {
        long getLong();
    }

    static abstract class Super implements Interface2, Interface3 {
        abstract int getInt();
    }

    @AutoValue
    static abstract class Sub extends Super implements Interface1, Interface2 {
        abstract String getString();
        public abstract Object getObject();
    }
}

Please, document the order of AutoValue_AutoValueTest_Sub constructor arguments.