public String getPolicyRevision() {
        return this.policyRevision;
    }
<p>
The current revision of the resource policy to be set. This revision is used for optimistic locking, which
prevents others from overwriting your changes to the domain's resource policy.
</p>

@return The current revision of the resource policy to be set. This revision is used for optimistic locking,
        which prevents others from overwriting your changes to the domain's resource policy.
aws-java-sdk-codeartifact/src/main/java/com/amazonaws/services/codeartifact/model/PutDomainPermissionsPolicyRequest.java