public void setDBSubnetGroups(java.util.Collection<DBSubnetGroup> dBSubnetGroups) {
        if (dBSubnetGroups == null) {
            this.dBSubnetGroups = null;
            return;
        }

        this.dBSubnetGroups = new com.amazonaws.internal.SdkInternalList<DBSubnetGroup>(dBSubnetGroups);
    }
<p>
A list of <code>DBSubnetGroup</code> instances.
</p>

@param dBSubnetGroups
       A list of <code>DBSubnetGroup</code> instances.
aws-java-sdk-rds/src/main/java/com/amazonaws/services/rds/model/DescribeDBSubnetGroupsResult.java