public void setLastMessageArrivalTime(java.util.Date lastMessageArrivalTime) {
        this.lastMessageArrivalTime = lastMessageArrivalTime;
    }
<p>
The last time when a new message arrived in the channel.
</p>
<p>
IoT Analytics updates this value at most once per minute for one channel. Hence, the
<code>lastMessageArrivalTime</code> value is an approximation.
</p>
<p>
This feature only applies to messages that arrived in the data store after October 23, 2020.
</p>

@param lastMessageArrivalTime
       The last time when a new message arrived in the channel.</p>
       <p>
       IoT Analytics updates this value at most once per minute for one channel. Hence, the
       <code>lastMessageArrivalTime</code> value is an approximation.
       </p>
       <p>
       This feature only applies to messages that arrived in the data store after October 23, 2020.
aws-java-sdk-iotanalytics/src/main/java/com/amazonaws/services/iotanalytics/model/ChannelSummary.java