public String getNeptuneIamRoleArn() {
        return this.neptuneIamRoleArn;
    }
<p>
The ARN of an IAM role that provides Neptune access to SageMaker and Amazon S3 resources. This must be listed in
your DB cluster parameter group or an error will occur.
</p>

@return The ARN of an IAM role that provides Neptune access to SageMaker and Amazon S3 resources. This must be
        listed in your DB cluster parameter group or an error will occur.
aws-java-sdk-neptunedata/src/main/java/com/amazonaws/services/neptunedata/model/ListMLEndpointsRequest.java