code: private static FaxClientSpiInterceptor[] createFaxClientSpiInterceptors(FaxClientSpi faxClientSpi)
      {
          //get type list
          String typeListStr=faxClientSpi.getConfigurationValue(FaxClientSpiFactory.SPI_INTERCEPTOR_LIST_PROPERTY_KEY);
          FaxClientSpiInterceptor[] interceptors=null;
          if(typeListStr!=null)
          {
              //split list
              String[] types=typeListStr.split(FaxClientSpiFactory.SPI_INTERCEPTOR_LIST_SEPARATOR);
              
              //get amount
              int amount=types.length;
              
              String type=null;
              String propertyKey=null;
              String className=null;
              FaxClientSpiInterceptor interceptor=null;
              List<FaxClientSpiInterceptor> interceptorList=new LinkedList<FaxClientSpiInterceptor>();
              for(int index=0;index<amount;index++)
              {
                  //get next type
                  type=types[index];
                  
                  if((type!=null)&&(type.length()>0))
                  {
                      //get property key
                      propertyKey=FaxClientSpiFactory.SPI_INTERCEPTOR_TYPE_PROPERTY_KEY_PREFIX+type;
                      
                      //get class name
                      className=faxClientSpi.getConfigurationValue(propertyKey);
                      
                      if(className==null)
                      {
                          throw new FaxException("Class name not defined by property: "+propertyKey+" for SPI interceptor.");
                      }
  
                      //create new instance
                      interceptor=(FaxClientSpiInterceptor)ReflectionHelper.createInstance(className);
                      
                      //initialize
                      interceptor.initialize(faxClientSpi);
                      
                      //add to list
                      interceptorList.add(interceptor);
                  }
                  
                  //convert to array
                  interceptors=interceptorList.toArray(new FaxClientSpiInterceptor[interceptorList.size()]);
              }
          }
          
          return interceptors;
      }
docs: This function creates the fax client SPI interceptors.
  
  @param   faxClientSpi
  The fax client SPI
  @return  The interceptors