private static GrMethodCallExpression createMethodCall(ExtractInfoHelper helper) {
    StringBuilder buffer = new StringBuilder();
    appendName(buffer, helper.getName());
    buffer.append("(");
    int number = 0;
    for (ParameterInfo info : helper.getParameterInfos()) {
      if (info.passAsParameter) number++;
    }
    int i = 0;
    String[] argumentNames = helper.getArgumentNames();
    for (String argName : argumentNames) {
      if (!argName.isEmpty()) {
        buffer.append(argName);
        if (i < number - 1) {
          buffer.append(",");
        }
        i++;
      }
    }

    buffer.append(")");
    String callText = buffer.toString();
    GroovyPsiElementFactory factory = GroovyPsiElementFactory.getInstance(helper.getProject());
    GrExpression expr = factory.createExpressionFromText(callText);
    LOG.assertTrue(expr instanceof GrMethodCallExpression, callText);
    return ((GrMethodCallExpression)expr);
  }
private static GrMethodCallExpression createMethodCall(ExtractInfoHelper helper)