public Optional<Boolean> readOnly() {
        return Optional.ofNullable(this.readOnly);
    }
@return readOnly here will force the Glusterfs volume to be mounted with read-only permissions. Defaults to false. More info: https://examples.k8s.io/volumes/glusterfs/README.md#create-a-pod
sdk/java/src/main/java/com/pulumi/kubernetes/core/v1/outputs/GlusterfsPersistentVolumeSource.java