How to Check if Creater has added himself has a Promotion Approver?

Hi Community,

I have a requirement in a workflow where a user (Creator) receives a task to select the Promotion Approvers. I am writing validation where i want to check if the user has not selected himself as an promotion approver?

Anyone has the code snippet for this? Looks like this:-

  public ArrayList getRoles() throws WTException {

  wt.project.Role[] mandatoryRoles = {wt.project.Role.toRole("PROMOTION APPROVERS")};

  for (Role role: mandatoryRoles){

  EnumeratedType[] displays = role.getValueSet();

  for (int i = 0; i < displays.length; i++) {

  EnumeratedType enumeratedType = displays[i];