@Nullable
  private Navigatable getDescriptorForTargetNode(MessageNode node) {
    final String targetName = node.getText()[0];
    final AntBuildTargetBase target = (AntBuildTargetBase)myBuildFile.getModel().findTarget(targetName);
    return (target == null) ? null : target.getOpenFileDescriptor();
  }
@Nullable
  private Navigatable getDescriptorForTargetNode(MessageNode node)