export function defmulti<A, B, C, D, E, F, G, T>(
    f: DispatchFn6O<A, B, C, D, E, F, G>,
    rels?: AncestorDefs,
    impls?: IObjectOf<Implementation6O<A, B, C, D, E, F, G, T>>
): MultiFn6O<A, B, C, D, E, F, G, T>;