public AwsIamConfig withSigningServiceName(String signingServiceName) {
        setSigningServiceName(signingServiceName);
        return this;
    }
<p>
The signing service name for IAM authorization.
</p>

@param signingServiceName
       The signing service name for IAM authorization.
@return Returns a reference to this object so that method calls can be chained together.
aws-java-sdk-appsync/src/main/java/com/amazonaws/services/appsync/model/AwsIamConfig.java