code: public WasAttributedTo newWasAttributedTo(QualifiedName id, 
                                                QualifiedName entity,
  					      QualifiedName agent) {
  	WasAttributedTo res = of.createWasAttributedTo();
  	res.setId(id);
  	res.setEntity(entity);
  	res.setAgent(agent);
  	return res;
      }
docs: A factory method to create an instance of an attribution {@link WasAttributedTo}
  @param id  an optional identifier for the relation
  @param entity an entity identifier
  @param agent  the identifier of the agent whom the entity is ascribed to, and therefore bears some responsibility for its existence
  @return an instance of {@link WasAttributedTo}