How to use the builder-util-runtime.safeGetHeader function in builder-util-runtime

export function checkIsRangesSupported(response: IncomingMessage, reject: (error: Error) => void): boolean {
  // Electron net handles redirects automatically, our NodeJS test server doesn't use redirects - so, we don't check 3xx codes.
  if (response.statusCode!! >= 400) {
    reject(createHttpError(response))
    return false
  }

  if (response.statusCode !== 206) {
    const acceptRanges = safeGetHeader(response, "accept-ranges")
    if (acceptRanges == null || acceptRanges === "none") {
      reject(new Error(`Server doesn't support Accept-Ranges (response code ${response.statusCode})`))
      return false
    }
  }
  return true
}

const request = differentialDownloader.httpExecutor.createRequest(requestOptions, response => {
    if (!checkIsRangesSupported(response, reject)) {
      return
    }

    const contentType = safeGetHeader(response, "content-type")
    const m = /^multipart\/.+?(?:; boundary=(?:(?:"(.+)")|(?:([^\s]+))))$/i.exec(contentType)
    if (m == null) {
      reject(new Error(`Content-Type "multipart/byteranges" is expected, but got "${contentType}"`))
      return
    }

    const dicer = new DataSplitter(out, options, partIndexToTaskIndex, m[1] || m[2], partIndexToLength, resolve)
    dicer.on("error", reject)
    response.pipe(dicer)
  })
  differentialDownloader.httpExecutor.addErrorAndTimeoutHandlers(request, reject)