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

@param launchTime
       Specifies when the Region replication began.
@return Returns a reference to this object so that method calls can be chained together.
aws-java-sdk-directory/src/main/java/com/amazonaws/services/directory/model/RegionDescription.java