code: private void serializeNoQuoteTo(String s, Writer writer, boolean escapeSlash, boolean unicodeEscapeAll) throws UncheckedIOException {
  		try {
  			char[] carr = s.toCharArray();
  			int len = carr.length;
  			for(int i = 0; i < len; i++) {
  				char c = carr[i];
  				switch (c) {
  				case '"':
  					writer.write("\\\"");
  					break;
  				case '/':
  					writer.write(escapeSlash ? "\\/" : "/");
  					break;
  				case '\\':
  					writer.write("\\\\");
  					break;
  				case '\b':
  					writer.write("\\b");
  					break;
  				case '\f':
  					writer.write("\\f");
  					break;
  				case '\n':
  					writer.write("\\n");
  					break;
  				case '\r':
  					writer.write("\\r");
  					break;
  				case '\t':
  					writer.write("\\t");
  					break;
  				default:
  					if(unicodeEscapeAll) {
  						if(c < 127) {
  							writer.append(c);
  						} else {
  							String hex = Integer.toHexString(c);
  							writer.write("\\u");
  							switch (hex.length()) {
  							case 1:
  								writer.write("000");
  								break;
  							case 2:
  								writer.write("00");
  								break;
  							case 3:
  								writer.write("0");
  								break;
  							default:
  								break;
  							}
  							writer.write(Integer.toHexString(c));
  						}
  					} else {
  						writer.append(c);
  					}
  					break;
  				}
  			}
  		} catch(IOException e) {
  			throw EX.uncheckedIO(e);
  		}
  	}
docs: \" \\ \/ \b \f \n \r \t \u1234 four-hex-digits