code: function signalTerm(childProcess, callback) {
    childProcess.emit('signalTerm');
    if (IS_WINDOWS) {
      // On Windows, there is no such way as SIGTERM or SIGINT. The closest
      // thing is to interrupt the process with Ctrl+C. Under the hood, that
      // generates '\u0003' character on stdin of the process and if
      // the process listens on stdin, it's able to catch this as 'SIGINT'.
      //
      // However, that only works if user does it manually. There is no
      // way to do it programmatically, at least not in Node.js (and even
      // for C/C++, all the solutions are dirty hacks). Even if you send
      // the very same character to stdin of the process, it's not
      // recognized (the rl.on('SIGINT') event won't get triggered)
      // for some reason.
      //
      // The only thing Dredd is left with is a convention. So when Dredd
      // wants to gracefully signal to the child process it should terminate,
      // it sends the '\u0003' to stdin of the child. It's up to the child
      // to implement reading from stdin in such way it works both for
      // programmatic and manual Ctrl+C.
      childProcess.stdin.write(String.fromCharCode(ASCII_CTRL_C));
    } else {
      childProcess.kill('SIGTERM');
    }
    process.nextTick(callback);
  }
docs: Signals the child process to gracefully terminate