public static String key(String groupId, String artifactId, String version) {
        notBlank(groupId, "groupId can neither be null, empty nor blank");
        notBlank(artifactId, "artifactId can neither be null, empty nor blank");
        notBlank(version, "version can neither be null, empty nor blank");

        return groupId + ":" + artifactId + ":" + version;
    }

    private static void notBlank(String str, String message) {

        assertEquals("PrunedTag [tag=a, id=null, css=test, attrName=null, attrValue=null]", tags[0].toString());

        tags = PrunedTag.parse("a[target=_blank]");
        assertEquals(1, tags.length);
        assertEquals("PrunedTag [tag=a, id=null, css=null, attrName=target, attrValue=_blank]", tags[0].toString());

        tags = PrunedTag.parse("a.link,div#123");
        assertEquals(2, tags.length);

        final String fileName = artifact.getFileName();
        final String url = artifact.getUrl();
        if (StringUtil.isBlank(url)) {
            throw new PluginException("url is blank: " + artifact.getName());
        }
        if (url.startsWith("http:") || url.startsWith("https:")) {
            try (final CurlResponse response = createCurlRequest(url).execute()) {

        return false;
    }

    public ArtifactRepository getRepository() {
        return null;
    }

    public void setRepository(ArtifactRepository remoteRepository) {
        // intentionally blank
    }

      for (String keyValuePair : KEYS_SPLITTER.split(cacheBuilderSpecification)) {
        List<String> keyAndValue = ImmutableList.copyOf(KEY_VALUE_SPLITTER.split(keyValuePair));
        checkArgument(!keyAndValue.isEmpty(), "blank key-value pair");
        checkArgument(
            keyAndValue.size() <= 2,
            "key-value pair %s with more than one equals sign",
            keyValuePair);

    public static final String ERRORS_invalid_str_is_included = "{errors.invalid_str_is_included}";

    /** The key of the message: Password is required. */
    public static final String ERRORS_blank_password = "{errors.blank_password}";

    /** The key of the message: Confirm Password does not match. */
    public static final String ERRORS_invalid_confirm_password = "{errors.invalid_confirm_password}";

        attrExpiration = sizeExpiration =
                System.currentTimeMillis() + attrExpirationPeriod;
    }

    private SmbComBlankResponse blank_resp() {
        if( blank_resp == null ) {
            blank_resp = new SmbComBlankResponse();
        }
        return blank_resp;
    }
    void resolveDfs(ServerMessageBlock request) throws SmbException {
        if (request instanceof SmbComClose)
            return;

      for (String keyValuePair : KEYS_SPLITTER.split(cacheBuilderSpecification)) {
        List<String> keyAndValue = ImmutableList.copyOf(KEY_VALUE_SPLITTER.split(keyValuePair));
        checkArgument(!keyAndValue.isEmpty(), "blank key-value pair");
        checkArgument(
            keyAndValue.size() <= 2,
            "key-value pair %s with more than one equals sign",
            keyValuePair);

   *     not support creating temporary directories securely
   * @deprecated For Android users, see the <a
   *     href="https://developer.android.com/training/data-storage" target="_blank">Data and File
   *     Storage overview</a> to select an appropriate temporary directory (perhaps {@code
   *     context.getCacheDir()}), and create your own directory under that. (For example, you might