private static final String KEY_ALIAS1 = "jude.multi_language.alias1";


private String geAlias1(INamedElement element) {
    ITaggedValue[] tvs = element.getTaggedValues();
    for (int i = 0; i < tvs.length; i++) {
        ITaggedValue tv = tvs[i];
        if (KEY_ALIAS1.equals(tv.getKey())) {
            return tv.getValue();
        }
    }
    return null;
}