code: @Override
  	protected BundlePathMappingBuilder createBundlePathMappingBuilder(String fileExtension,
  			ResourceReaderHandler resourceReaderHandler, GeneratorRegistry generatorRegistry) {
  		return new CompositeBundlePathMappingBuilder(this, fileExtension, generatorRegistry, resourceReaderHandler);
  	}
docs: /*
  (non-Javadoc)
  
  @see net.jawr.web.resource.bundle.JoinableResourceBundleImpl#
  createBundlePathMappingBuilder(java.lang.String,
  net.jawr.web.resource.handler.reader.ResourceReaderHandler,
  net.jawr.web.resource.bundle.generator.GeneratorRegistry)