assertProvideThrowsException("Test(Classification)");
        assertProvideThrowsException("Test[Classification]");
        assertProvideThrowsException("Test{Classification}");
        assertProvideThrowsException("Test|Classification");
        assertProvideThrowsException("Test\\Classification");
        assertProvideThrowsException("Test/Classification");
        assertProvideThrowsException("Test<Classification>");

    protected static final String BAD_URLS = "bad_urls";

    /** Array of supported web protocols for URL classification. */
    protected String[] webProtocols = { "http:", "https:" };

    /** Array of supported file protocols for URL classification. */
    protected String[] fileProtocols = { "file:", "smb:", "smb1:", "ftp:", "storage:" };

    if (part.length() < 1 || part.length() > MAX_DOMAIN_PART_LENGTH) {
      return false;
    }

    /*
     * GWT claims to support java.lang.Character's char-classification methods, but it actually only
     * works for ASCII. So for now, assume any non-ASCII characters are valid. The only place this
     * seems to be documented is here: