RAM API to retrieve the users assigned to a particular User role?

Hello team,

We are looking for an API that will retrieve all the users who are assigned to a  User role in a community.

We tried the getUserIDs() RAM API but it gives null pointer exception error. We are using RAM 7.5.0.2. Please advise?

Snippet code

------------------

 try
  {
  RAMSession session = new RAMSession( "RAMURL", "ADMIN", "PASSWORD" );
  RAMCommunity community = session.getCommunity("COMMUNITY NAME");
  // Connect ram server
  RAM1 ram1 = new RAMClient(new URL( "RAMURL" ), "ADMIN", "PASSWORD", null).getRAM1Webservice();
  //Get User Roles for this community
  RoleSO[] rolesArray = ram1.getRoles(community.getId());
  //Get User IDs for each role
  for(int i=0; i<rolesArray.length; i++){

 System.out.println("Role Name: " + rolesArray[i].getName() + "     Number of Users: " + rolesArray[i].getUserIDs().length);
  }
  session.release();
  }
  catch(Exception e){e.printStackTrace();}

Thanks in advance,

Regards,

Sripriya