public void setResponseHeaderReceiveTime(long responseHeaderReceiveTime) {
    this.responseHeaderReceiveTime = responseHeaderReceiveTime;
  }
Set the time in msec at which response header is received. For HTTP2, this is the time at which first response
header frame is received.
@param responseHeaderReceiveTime in msec.
ambry-api/src/main/java/com/github/ambry/network/RequestInfo.java