@Nullable
  public static GrStatement findEnclosingStatement(@Nullable PsiElement context) {
    while (context != null) {
      if (isExpressionStatement(context)) return (GrStatement)context;
      context = PsiTreeUtil.getParentOfType(context, GrStatement.class, true);
    }
    return null;
  }
@Nullable
  public static GrStatement findEnclosingStatement(@Nullable PsiElement context)