code: public int getRemoteBusinessInterfaceIndex(String interfaceName) {
          if (ivBusinessRemoteInterfaceClasses != null) {
              for (int i = 0; i < ivBusinessRemoteInterfaceClasses.length; i++) {
                  String bInterface = ivBusinessRemoteInterfaceClasses[i].getName();
                  if (bInterface.equals(interfaceName)) {
                      if (TraceComponent.isAnyTracingEnabled() && tc.isDebugEnabled())
                          Tr.debug(tc, "getRemoteBusinessInterfaceIndex : " +
                                       bInterface + " at index " + i);
                      return i;
                  }
              }
          }
  
          return -1;
      }
docs: Gets the index of the remote business interface.
  
  @param interfaceName the interface to find the index of
  @return the index of the interface passed in