public void setProjectArn(String projectArn) {
        this.projectArn = projectArn;
    }
<p>
The Amazon Resource Name (ARN) of the project to which the project policy is attached.
</p>

@param projectArn
       The Amazon Resource Name (ARN) of the project to which the project policy is attached.
aws-java-sdk-rekognition/src/main/java/com/amazonaws/services/rekognition/model/ProjectPolicy.java