public String getNeptuneIamRoleArn() {
        return this.neptuneIamRoleArn;
    }
<p>
The Amazon Resource Name (ARN) of an IAM role that SageMaker can assume to perform tasks on your behalf. This
must be listed in your DB cluster parameter group or an error will occur.
</p>

@return The Amazon Resource Name (ARN) of an IAM role that SageMaker can assume to perform tasks on your behalf.
        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/StartMLDataProcessingJobRequest.java