@Override
  protected void processIntention(@NotNull PsiElement element, @NotNull ActionContext context, @NotNull ModPsiUpdater updater) {
    final GrMethodCallExpression expression = (GrMethodCallExpression)element;
    final GrClosableBlock block = expression.getClosureArguments()[0];
    final GrParameterList parameterList = block.getParameterList();
    final GrParameter[] parameters = parameterList.getParameters();

    String var;
    if (parameters.length == 1) {
      var = parameters[0].getText();
      var = StringUtil.replace(var, GrModifier.DEF, "");
    }
    else {
      var = "it";
    }

    final GrExpression invokedExpression = expression.getInvokedExpression();
    GrExpression qualifier = ((GrReferenceExpression)invokedExpression).getQualifierExpression();
    final GroovyPsiElementFactory elementFactory = GroovyPsiElementFactory.getInstance(element.getProject());
    if (qualifier == null) {
      qualifier = elementFactory.createExpressionFromText("this");
    }

    StringBuilder builder = new StringBuilder();
    builder.append("for (").append(var).append(" in ").append(qualifier.getText()).append(") {\n");
    String text = block.getText();
    final PsiElement blockArrow = block.getArrow();
    int index;
    if (blockArrow != null) {
      index = blockArrow.getStartOffsetInParent() + blockArrow.getTextLength();
    }
    else {
      index = 1;
    }
    while (index < text.length() && Character.isWhitespace(text.charAt(index))) index++;
    text = text.substring(index, text.length() - 1);
    builder.append(text);
    builder.append("}");

    final GrStatement statement = elementFactory.createStatementFromText(builder.toString());
    GrForStatement forStatement = (GrForStatement)expression.replaceWithStatement(statement);
    final GrForClause clause = forStatement.getClause();
    if (!(clause instanceof GrForInClause)) return;
    final GrVariable variable = ((GrForInClause)clause).getDeclaredVariable();
    if (variable != null) {
      updater.rename(variable, List.of(variable.getName()));
    }

    updateReturnStatements(forStatement);
  }
@Override
  protected void processIntention(@NotNull PsiElement element, @NotNull ActionContext context, @NotNull ModPsiUpdater updater)