config-servlet/src/main/java/org/ocpsoft/rewrite/servlet/config/ServletMapping.java
private List<ServletRegistrationProvider> getServletRegistrationProviders()
   {
      if (servletRegistrationProviders == null)
      {
         servletRegistrationProviders = Iterators.asList(
                  ServiceLoader.loadTypesafe(ServletRegistrationProvider.class).iterator());
         Collections.sort(servletRegistrationProviders, new WeightedComparator());
      }
      return servletRegistrationProviders;
   }
private List<ServletRegistrationProvider> getServletRegistrationProviders()
   {
      if (servletRegistrationProviders == null)
      {
         servletRegistrationProviders = Iterators.asList(
                  ServiceLoader.loadTypesafe(ServletRegistrationProvider.class).iterator());
         Collections.sort(servletRegistrationProviders, new WeightedComparator());
      }
      return servletRegistrationProviders;
   }
Returns the list of {@link ServletRegistrationProvider} implementations.