public void setPolicy(String policy) {
        this.policy = policy;
    }
<p>
A JSON string that describes the permission policy statement. You can include a <code>Policy</code> parameter in
the request instead of using the <code>StatementId</code>, <code>Action</code>, <code>Principal</code>, or
<code>Condition</code> parameters.
</p>

@param policy
       A JSON string that describes the permission policy statement. You can include a <code>Policy</code>
       parameter in the request instead of using the <code>StatementId</code>, <code>Action</code>,
       <code>Principal</code>, or <code>Condition</code> parameters.
aws-java-sdk-eventbridge/src/main/java/com/amazonaws/services/eventbridge/model/PutPermissionRequest.java