public static boolean isValidImportString(String s) {
        if (s.equals("*"))
            return true;

        boolean valid = true;
        String t = s;
        int index = t.indexOf('*');

        if (index != -1) {
            // '*' must be last character...
            if (index == t.length() -1) {
                // ... any and preceding character must be '.'
                if ( index-1 >= 0 ) {
                    valid = t.charAt(index-1) == '.';
                    // Strip off ".*$" for identifier checks
                    t = t.substring(0, t.length()-2);
                }
            } else
                return false;
        }

        // Verify string is off the form (javaId \.)+ or javaId
        if (valid) {
            String[] javaIds = t.split("\\.", t.length()+2);
            for(String javaId: javaIds)
                valid &= SourceVersion.isIdentifier(javaId);
        }
        return valid;
    }