tagLibrary = fallbackResolver.resolve(uri);
Object o = uriMap.get(uri); if (o instanceof TagLibrary) tagLibrary = (TagLibrary) o;
    TagLibrary findTagLibrary(String uri) {        TagLibrary tagLibrary = null;        int colon;        if (uri.length() == 0 && defaultNamespaceUri != null)            uri = defaultNamespaceUri;        colon = uri.indexOf(':');        if (colon != -1) {            String prefix = uri.substring(0, colon);            Object o = prefixResolvers.get(prefix);            TagLibraryResolver resolver = (TagLibraryResolver) o;            if (resolver != null)                tagLibrary = resolver.resolve(uri.substring(colon + 1));        }        if (tagLibrary == null) {            tagLibrary = fallbackResolver.resolve(uri);        }        return tagLibrary;    }