docs: public void setAttributeEditable(Attribute attribute, boolean editable) {
  		attribute.setEditable(editable);
  		if (!(attribute instanceof LazyAttribute)) { // should not instantiate lazy attributes!
  			if (attribute instanceof ManyToOneAttribute) {
  				setAttributeEditable(((ManyToOneAttribute) attribute).getValue(), editable);
  			} else if (attribute instanceof OneToManyAttribute) {
  				List<AssociationValue> values = ((OneToManyAttribute) attribute).getValue();
  				for (AssociationValue value : values) {
  					setAttributeEditable(value, editable);
  				}
  			}
  		}
  	}