docs: public Object getBusinessObject(String interfaceName) throws RemoteException {
          int interfaceIndex = ivBMD.getLocalBusinessInterfaceIndex(interfaceName);
          if (interfaceIndex != -1) {
              return getLocalBusinessObject(interfaceIndex);
          }
  
          interfaceIndex = ivBMD.getRemoteBusinessInterfaceIndex(interfaceName);
          if (interfaceIndex != -1) {
              return getRemoteBusinessObject(interfaceIndex);
          }
  
          throw new IllegalStateException("Requested business interface not found : " + interfaceName);
      }