import jetbrains.mps.graphLayout.graph.Edge;
import jetbrains.mps.graphLayout.graph.Node;
public class Dart {
private Edge myEdge;
private Edge.Direction myDirection;
<BUG>public Dart(Edge edge, Edge.Direction direction) {
myEdge = edge;
myDirection = direction;
}</BUG>
public Dart(Edge edge, Node source) {

import jetbrains.mps.graphLayout.graph.Edge;
import jetbrains.mps.graphLayout.graph.Node;
public class Dart {
private Edge myEdge;
private Edge.Direction myDirection;
public Dart(Edge edge, Node source) {
