type BattleLibrary {
    const LibrarySettings@ Settings { get const; };
    const StaticLibrary@ StaticLibrary { get const; };
    const SpeciesLibrary@ SpeciesLibrary { get const; };
    const MoveLibrary@ MoveLibrary { get const; };
    const ItemLibrary@ ItemLibrary { get const; };
    const DamageLibrary@ DamageLibrary { get const; };
}