How do I break the transfer of a stream

Hi, I am using fastPut and fastGet of this library to get the high-speed transfer, but I have a request to interrupt the transfer so that the user can break the transfer, can I add a flag bit so that the developer can set a time to interrupt the stream transfer。

this.sftp?.fastPut(local, remote, atomicBreak, {
      step: (transferd, chunk, totalSize) => {
        console.log(transferd, totalSize);
      },
    }, (err) => {
      if (err) {
        console.error("error: ", err);
      }
    })

Start at the fastPut and fastGet entry points shown in the report and trace their transfer callbacks. Define the interruption behavior and verify that a caller can stop an in-progress transfer and observe its completion or error outcome; no implementation file or test is named, so locate relevant coverage before changing it.