public String getExecutionRoleArn() {
        return this.executionRoleArn;
    }
<p>
The Amazon Resource Name (ARN) of the runtime role for a step on the cluster. The runtime role can be a
cross-account IAM role. The runtime role ARN is a combination of account ID, role name, and role type using the
following format: <code>arn:partition:service:region:account:resource</code>.
</p>
<p>
For example, <code>arn:aws:IAM::1234567890:role/ReadOnly</code> is a correctly formatted runtime role ARN.
</p>

@return The Amazon Resource Name (ARN) of the runtime role for a step on the cluster. The runtime role can be a
        cross-account IAM role. The runtime role ARN is a combination of account ID, role name, and role type
        using the following format: <code>arn:partition:service:region:account:resource</code>. </p>
        <p>
        For example, <code>arn:aws:IAM::1234567890:role/ReadOnly</code> is a correctly formatted runtime role
        ARN.
aws-java-sdk-emr/src/main/java/com/amazonaws/services/elasticmapreduce/model/Step.java