public ModifySnapshotTierResult withTieringStartTime(java.util.Date tieringStartTime) {
        setTieringStartTime(tieringStartTime);
        return this;
    }
<p>
The date and time when the archive process was started.
</p>

@param tieringStartTime
       The date and time when the archive process was started.
@return Returns a reference to this object so that method calls can be chained together.
aws-java-sdk-ec2/src/main/java/com/amazonaws/services/ec2/model/ModifySnapshotTierResult.java