How to use the http-parser-js.HTTPParser.kOnMessageComplete function in http-parser-js

module.exports = function getHttpResponseData (httpContentBuffer) {
  const parser = new HTTPParser(HTTPParser.RESPONSE);
  let httpData = {};

  parser[HTTPParser.kOnMessageComplete] = noop;
  parser[HTTPParser.kOnHeaders] = noop;

  // Get headers and parse them to an object format for easier use
  parser[HTTPParser.kOnHeadersComplete] = function (meta) {
    const headerObject = {};

    for (let i = 0; i < meta.headers.length; i += 2) {
      headerObject[meta.headers[i]] = meta.headers[i + 1];
    }

    httpData = xtend(httpData, meta, {
      headers: headerObject
    });
  };

  // The below function can fire multiple times for "transfer-encoding: chunked"

this.paused = false
    }, 1000)
  }

  this.timeoutTicker = retimer(handleTimeout, this.timeout)
  this.parser[HTTPParser.kOnHeaders] = () => {}
  this.parser[HTTPParser.kOnHeadersComplete] = (opts) => {
    this.emit('headers', opts)
    this.resData[this.cer].headers = opts
  }

  this.parser[HTTPParser.kOnBody] = (body) => {
    this.emit('body', body)
  }

  this.parser[HTTPParser.kOnMessageComplete] = () => {
    const end = process.hrtime(this.resData[this.cer].startTime)
    const responseTime = end[0] * 1e3 + end[1] / 1e6
    this.emit('response', this.resData[this.cer].headers.statusCode, this.resData[this.cer].bytes, responseTime)
    this.resData[this.cer].bytes = 0

    if (!this.destroyed && this.reconnectRate && this.reqsMade % this.reconnectRate === 0) {
      return this._resetConnection()
    }

    this.cer = this.cer === opts.pipelining - 1 ? 0 : this.cer++
    this._doRequest(this.cer)
  }

  this._connect()
}

cb(null, {
        statusCode,
        headers: parseHeaders(headers),
        body: this._lastBody
      })

      if (this.closed && this[kQueue].length() === 0) {
        this.destroy()
      }
    }

    this.parser[HTTPParser.kOnBody] = (chunk, offset, length) => {
      this._lastBody.push(chunk.slice(offset, offset + length))
    }

    this.parser[HTTPParser.kOnMessageComplete] = () => {
      const body = this._lastBody
      this._lastBody = null
      body.push(null)
    }

    this[kReadCb] = () => {
      this[kIsWaiting] = false
      this[kRead]()
    }
  }