declare namespace org {
    namespace spongepowered {
        namespace api {
            namespace event {
                namespace filter {
                    namespace cause {
                        // @ts-ignore
                        interface All {
                            /**
                             * Whether this listener should be skipped if the array would be empty.
                             */
                            // @ts-ignore
                             ignoreEmpty(): boolean;
                        }
                    }
                }
            }
        }
    }
}
