public void setCallingCountry(String callingCountry) {
        this.callingCountry = callingCountry;
    }
<p>
The country from which emergency calls are allowed, in ISO 3166-1 alpha-2 format.
</p>

@param callingCountry
       The country from which emergency calls are allowed, in ISO 3166-1 alpha-2 format.
aws-java-sdk-chime/src/main/java/com/amazonaws/services/chime/model/DNISEmergencyCallingConfiguration.java