Retrieves a list of domain adminstrators in a cluster.
Collection<DomainAdministratorVO> getDomainAdministrators() throws SUPAdminException;
If successful, returns an object of the specified type (can be null). If unsuccessful, returns SUPAdminException.
//List domain administrators
for (DomainAdministratorVO davo : supCluster.getDomainAdministrators()) {
	System.out.println(davo.getLoginName());
}