public void setLaunchTime(java.util.Date launchTime) {
        this.launchTime = launchTime;
    }
<p>
Specifies when the Region replication began.
</p>

@param launchTime
       Specifies when the Region replication began.
aws-java-sdk-directory/src/main/java/com/amazonaws/services/directory/model/RegionDescription.java