@Override
    public Mapping clone() {
        final Mapping clone = new Mapping();
        forEach((key, value) -> {
            if (value != null) {
                clone.put(key, value.clone());
            }
        });
        return clone;
    }
@author <a href="mailto:nicolas.deloof@gmail.com">Nicolas De Loof</a>
plugin/src/main/java/io/jenkins/plugins/casc/model/Mapping.java