public java.util.List<String> getCallingRegions() {
        return callingRegions;
    }
<p>
The countries to which calls are allowed, in ISO 3166-1 alpha-2 format. Required.
</p>

@return The countries to which calls are allowed, in ISO 3166-1 alpha-2 format. Required.
aws-java-sdk-chimesdkvoice/src/main/java/com/amazonaws/services/chimesdkvoice/model/Termination.java