examples/org.eclipse.epsilon.examples.etl.xml2emf/tree.emf - epsilon/org.eclipse.epsilon - Git at Google

 package tree;

 class Tree {
 	attr String label;
 	ref Tree#children parent;
 	val Tree[*]#parent children;
 }
	package tree;

	class Tree {
	attr String label;
	ref Tree#children parent;
	val Tree[*]#parent children;
	}