declare namespace org {
    namespace spongepowered {
        namespace api {
            namespace event {
                namespace advancement {
                    namespace AdvancementTreeEvent {
                        // @ts-ignore
                        interface GenerateLayout extends org.spongepowered.api.event.advancement.AdvancementTreeEvent {
                            /**
                             * Gets the {@link TreeLayout} that got generated.
                             */
                            // @ts-ignore
                             getLayout(): org.spongepowered.api.advancement.TreeLayout;
                        }
                    }
                }
            }
        }
    }
}
