code: @Override
  	public void initialize(IAggregator aggregator, IAggregatorExtension extension, IExtensionRegistrar reg) {
  		super.initialize(aggregator, extension, reg);
  
  		// Get first resource factory extension so we can add to beginning of list
  		Iterable<IAggregatorExtension> resourceFactoryExtensions = aggregator.getExtensions(IResourceFactoryExtensionPoint.ID);
  		IAggregatorExtension first = resourceFactoryExtensions.iterator().next();
  
  		// Register the loaderExt resource factory
  		Properties attributes = new Properties();
  		attributes.put("scheme", getComboUri().getScheme()); //$NON-NLS-1$
  		reg.registerExtension(
  				new LoaderExtensionResourceFactory(),
  				attributes,
  				new InitParams(Collections.<InitParam>emptyList()),
  				IResourceFactoryExtensionPoint.ID,
  				getTransportId(),
  				first);
  
  	}
docs: /* (non-Javadoc)
  @see com.ibm.jaggr.service.transport.AbstractHttpTransport#initialize(com.ibm.jaggr.service.IAggregator, com.ibm.jaggr.service.IAggregatorExtension, com.ibm.jaggr.service.IExtensionInitializer.IExtensionRegistrar)