public void setEntityArn(String entityArn) {
        this.entityArn = entityArn;
    }
<p>
The unique Amazon Resource Name (ARN). Detective supports IAM user ARNs and IAM role ARNs.
</p>

@param entityArn
       The unique Amazon Resource Name (ARN). Detective supports IAM user ARNs and IAM role ARNs.
aws-java-sdk-detective/src/main/java/com/amazonaws/services/detective/model/GetInvestigationResult.java