code: public boolean isRefInverse(Reference ref) {
  		if (ref.isInverse()) {
  			return true;
  		}
  		if (!ref.isInverse() && (ref.getOpposite() != null) && ref.getOpposite().isInverse()) {
  			return false;
  		}
  		if (ref.getOpposite() == null) {
  			return false;
  		}
  		// inverse not defined on any side, use this algorithm
  		String name1 = ref.getTo().getName();
  		String name2 = ref.getFrom().getName();
  
  		// use a well defined algorithm, like alphabetic order
  		// A -> B inverse=false
  		// B -> A inverse= true
  		return (name1.compareTo(name2) < 0);
  	}
docs: Inverse attribute for many-to-many associations.