public void setPolicyRevisionId(String policyRevisionId) {
        this.policyRevisionId = policyRevisionId;
    }
<p>
The revision ID for the Project Policy. Each time you modify a policy, Amazon Rekognition Custom Labels generates
and assigns a new <code>PolicyRevisionId</code> and then deletes the previous version of the policy.
</p>

@param policyRevisionId
       The revision ID for the Project Policy. Each time you modify a policy, Amazon Rekognition Custom Labels
       generates and assigns a new <code>PolicyRevisionId</code> and then deletes the previous version of the
       policy.
aws-java-sdk-rekognition/src/main/java/com/amazonaws/services/rekognition/model/PutProjectPolicyRequest.java