public DBClusterMember withPromotionTier(Integer promotionTier) {
        setPromotionTier(promotionTier);
        return this;
    }
<p>
A value that specifies the order in which an Amazon DocumentDB replica is promoted to the primary instance after
a failure of the existing primary instance.
</p>

@param promotionTier
       A value that specifies the order in which an Amazon DocumentDB replica is promoted to the primary instance
       after a failure of the existing primary instance.
@return Returns a reference to this object so that method calls can be chained together.
aws-java-sdk-docdb/src/main/java/com/amazonaws/services/docdb/model/DBClusterMember.java