public void setIamRoleArn(String iamRoleArn) {
        this.iamRoleArn = iamRoleArn;
    }
<p>
A valid Amazon Resource Name (ARN) that identifies an IAM role. At runtime, DAX will assume this role and use the
role's permissions to access DynamoDB on your behalf.
</p>

@param iamRoleArn
       A valid Amazon Resource Name (ARN) that identifies an IAM role. At runtime, DAX will assume this role and
       use the role's permissions to access DynamoDB on your behalf.
aws-java-sdk-dax/src/main/java/com/amazonaws/services/dax/model/CreateClusterRequest.java