public final boolean serialize(final JoinFlag.Position position, final Set<JoinFlag> flags) {
        boolean handled = false;
        for (final JoinFlag flag : flags) {
            if (flag.getPosition() == position) {
                handle(flag.getFlag());
                handled = true;
            }
        }
        return handled;
    }
{@code SerializerBase} is a stub for Serializer implementations which serialize query metadata to Strings

@param <S> concrete subtype
@author tiwe
querydsl-core/src/main/java/com/querydsl/core/support/SerializerBase.java