code: public void setOWLObjectListAttribute(String name, List<OWLObject> value) {
          if(value == null) {
              throw new NullPointerException("value must not be null");
          }
          List<OWLObject> valueCopy = new ArrayList<OWLObject>(value);
          setValue(owlObjectAttributes, name, valueCopy);
      }
docs: Sets the {@link OWLObject} list values for an attribute.
  @param name The name of the attribute.  Not null.
  @param value The value of the attribute.  Not null.
  @throws NullPointerException if name is null or value is null.