declare namespace org {
    namespace spongepowered {
        namespace api {
            namespace data {
                namespace manipulator {
                    namespace mutable {
                        // @ts-ignore
                        interface RotationalData extends org.spongepowered.api.data.manipulator.mutable.VariantData {
                        }
                    }
                }
            }
        }
    }
}
