private static String nextWordOrSeparator(String text, int position,
            Set<Character> separators) {
        assert text != null : "Violation of: text is not null";
        assert separators != null : "Violation of: separators is not null";
        assert 0 <= position : "Violation of: 0 <= position";
        assert position < text.length() : "Violation of: position < |text|";

        String answer = "";

        int endPosition = position + 1;
        boolean wordOrSep = separators.contains(text.charAt(position));

        while (endPosition < text.length() && (wordOrSep == separators
                .contains(text.charAt(endPosition)))) {
            endPosition++;
        }

        answer = text.substring(position, endPosition);

        return answer;

    }