class CssParser {

  static String parseNextToken(ParsableByteArray input, StringBuilder stringBuilder) {
    skipWhitespaceAndComments(input);
    if (input.bytesLeft() == 0) {
      return null;
    }
    String identifier = parseIdentifier(input, stringBuilder);
    if (!"".equals(identifier)) {
      return identifier;
    }
    // We found a delimiter.
    return "" + (char) input.readUnsignedByte();
  }

  public  CssParser();

}