public void setSigningRegion(String signingRegion) {
        this.signingRegion = signingRegion;
    }
<p>
The signing Amazon Web Services Region for IAM authorization.
</p>

@param signingRegion
       The signing Amazon Web Services Region for IAM authorization.
aws-java-sdk-appsync/src/main/java/com/amazonaws/services/appsync/model/AwsIamConfig.java