code: static byte[] escapeString(byte b[]) {
          ByteBuffer content = new ByteBuffer();
          escapeString(b, content);
          return content.toByteArray();
      }
docs: Escapes a <CODE>byte</CODE> array according to the PDF conventions.
  
  @param b the <CODE>byte</CODE> array to escape
  @return an escaped <CODE>byte</CODE> array