code: @Override
  	public void registerEntityCreationTransformation(Class type, Transformation<GraphObject> transformation) {
  
  		final Set<Transformation<GraphObject>> transformations = getEntityCreationTransformationsForType(type);
  		if (!transformations.contains(transformation)) {
  
  			transformations.add(transformation);
  		}
  	}
docs: Register a transformation that will be applied to every newly created
  entity of a given type.
  
  @param type the type of the entities for which the transformation
  should be applied
  @param transformation the transformation to apply on every entity