public void setRoleArn(String roleArn) {
        this.roleArn = roleArn;
    }
<p>
The ARN of the role that grants IoT permission to start execution of a state machine
("Action":"states:StartExecution").
</p>

@param roleArn
       The ARN of the role that grants IoT permission to start execution of a state machine
       ("Action":"states:StartExecution").
aws-java-sdk-iot/src/main/java/com/amazonaws/services/iot/model/StepFunctionsAction.java