code: private String consumeTokenString() throws JsonParserException {
      reusableBuffer.setLength(0);
      while (true) {
        char c = stringChar();
  
        switch (c) {
        case '\"':
          return reusableBuffer.toString();
        case '\\':
          int escape = advanceChar();
          switch (escape) {
          case -1:
            throw createParseException(null, "EOF encountered in the middle of a string escape", false);
          case 'b':
            reusableBuffer.append('\b');
            break;
          case 'f':
            reusableBuffer.append('\f');
            break;
          case 'n':
            reusableBuffer.append('\n');
            break;
          case 'r':
            reusableBuffer.append('\r');
            break;
          case 't':
            reusableBuffer.append('\t');
            break;
          case '"':
          case '/':
          case '\\':
            reusableBuffer.append((char)escape);
            break;
          case 'u':
            reusableBuffer.append((char)(stringHexChar() << 12 | stringHexChar() << 8 //
                | stringHexChar() << 4 | stringHexChar()));
            break;
          default:
            throw createParseException(null, "Invalid escape: \\" + (char)escape, false);
          }
          break;
        default:
          reusableBuffer.append(c);
        }
      }
    }
docs: Steps through to the end of the current string token (the unescaped double quote).