public void setStackSetRegions(java.util.Collection<String> stackSetRegions) {
        if (stackSetRegions == null) {
            this.stackSetRegions = null;
            return;
        }

        this.stackSetRegions = new java.util.ArrayList<String>(stackSetRegions);
    }
<p>
One or more Amazon Web Services Regions where the provisioned product will be available.
</p>
<p>
Applicable only to a <code>CFN_STACKSET</code> provisioned product type.
</p>
<p>
The specified Regions should be within the list of Regions from the <code>STACKSET</code> constraint. To get the
list of Regions in the <code>STACKSET</code> constraint, use the <code>DescribeProvisioningParameters</code>
operation.
</p>
<p>
If no values are specified, the default value is all Regions from the <code>STACKSET</code> constraint.
</p>

@param stackSetRegions
       One or more Amazon Web Services Regions where the provisioned product will be available.</p>
       <p>
       Applicable only to a <code>CFN_STACKSET</code> provisioned product type.
       </p>
       <p>
       The specified Regions should be within the list of Regions from the <code>STACKSET</code> constraint. To
       get the list of Regions in the <code>STACKSET</code> constraint, use the
       <code>DescribeProvisioningParameters</code> operation.
       </p>
       <p>
       If no values are specified, the default value is all Regions from the <code>STACKSET</code> constraint.
aws-java-sdk-servicecatalog/src/main/java/com/amazonaws/services/servicecatalog/model/ProvisioningPreferences.java