public void setPolicy(String policy) {
        this.policy = policy;
    }
<p>
The JSON formatted <code>FileSystemPolicy</code> for the EFS file system.
</p>

@param policy
       The JSON formatted <code>FileSystemPolicy</code> for the EFS file system.
aws-java-sdk-efs/src/main/java/com/amazonaws/services/elasticfilesystem/model/PutFileSystemPolicyResult.java