public DBCluster withDBSubnetGroup(String dBSubnetGroup) {
        setDBSubnetGroup(dBSubnetGroup);
        return this;
    }
<p>
Specifies information on the subnet group that is associated with the cluster, including the name, description,
and subnets in the subnet group.
</p>

@param dBSubnetGroup
       Specifies information on the subnet group that is associated with the cluster, including the name,
       description, and subnets in the subnet group.
@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/DBCluster.java