code: @SuppressWarnings({ "rawtypes", "unchecked" })
      public static PackagingProcessor<? extends Archive<?>> find(
              final PackagingType packagingType) {
  
          ServiceRegistry registry = ServiceRegistry.getInstance();
          Collection<PackagingProcessor> processors = registry.all(PackagingProcessor.class);
  
          StringBuilder unsupportedFormatMessage = new StringBuilder("No packaging processor for ")
                  .append(packagingType.toString()).append(
                          " packaging was found. Supported processors are: ");
  
          for (PackagingProcessor processor : processors) {
              if (processor.handles(packagingType)) {
                  // unchecked cast
                  return (PackagingProcessor<? extends Archive<?>>) processor;
              }
              unsupportedFormatMessage.append(processor.getClass()).append(", ");
          }
          // trim
          if (unsupportedFormatMessage.indexOf(", ") != -1) {
              unsupportedFormatMessage.delete(unsupportedFormatMessage.length() - 2, unsupportedFormatMessage.length());
          }
  
          throw new UnsupportedOperationException(unsupportedFormatMessage.toString());
      }
docs: Finds the first packaging processor on the classpath that supports give {@code packageType}
  
  @param packagingType Package type
  @return