docs: protected void setPackageName(String newName, ResourceSet resourceSet) {
  		final EObject object = resourceSet.getEObject(this.uriProvider.apply(resourceSet), true);
  		if (object instanceof SarlScript) {
  			((SarlScript) object).setPackage(newName);
  		} else {
  			throw new RefactoringException("SARL script not loaded."); //$NON-NLS-1$
  		}
  	}