有没有办法在spark streaming窗口中提取窗口开始时间和窗口结束时间？

from pyspark.streaming import StreamingContext
from pyspark.streaming.kafka import KafkaUtils
from datetime import datetime

ssc = StreamingContext(sparkContext, batchDuration)

dstream = KafkaUtils.createDirectStream(ssc, topics, kafkaParams)
windowedDStream = dstream.window(windowDuration, slideDuration)

def processWindow(rdd, window):
    start_time = datetime.fromtimestamp(window[0] / 1000.0)
    end_time = datetime.fromtimestamp(window[1] / 1000.0)
    # 其他处理逻辑

windowedDStream.foreachRDD(lambda rdd, window: processWindow(rdd, window))