code: public static Config load(ClassLoader loader, Config config, ConfigResolveOptions resolveOptions) {
          return defaultOverrides(loader).withFallback(config).withFallback(defaultReference(loader))
                  .resolve(resolveOptions);
      }
docs: Like {@link #load(Config,ConfigResolveOptions)} but allows you to specify
  a class loader other than the context class loader.
  
  @param loader
  class loader to use when looking up override and reference
  configs
  @param config
  the application's portion of the configuration
  @param resolveOptions
  options for resolving the assembled config stack
  @return resolved configuration with overrides and fallbacks added