@Override
  protected void processIntention(@NotNull PsiElement element, @NotNull ActionContext context, @NotNull ModPsiUpdater updater) {
    GrForStatement forStatement = PsiTreeUtil.getParentOfType(element, GrForStatement.class);
    if (forStatement == null) return;
    GrForClause clause = forStatement.getClause();
    if (clause instanceof GrForInClause) {
      GrForStatement stubFor = (GrForStatement)GroovyPsiElementFactory.getInstance(context.project()).createStatementFromText("for (x in y){}");
      PsiElement newDelimiter = ((GrForInClause)stubFor.getClause()).getDelimiter();
      PsiElement delimiter = ((GrForInClause)clause).getDelimiter();
      delimiter.replace(newDelimiter);
    }
  }
@Override
  protected void processIntention(@NotNull PsiElement element, @NotNull ActionContext context, @NotNull ModPsiUpdater updater)