* @return PaginatedTenantUsageInfo
* @throws Exception
*/
public PaginatedTenantUsageInfo retrievePaginatedTenantUsages(String yearMonth, int pageNumber,
int entriesPerPage) throws Exception {
TenantManager tenantManager = Util.getRealmService().getTenantManager();
Tenant[] tenants = (Tenant[]) tenantManager.getAllTenants();
List<TenantUsage> tenantUsages = new ArrayList<TenantUsage>();
int i = 0;
int numberOfPages = 0;
for (Tenant tenant : tenants) {