public bool EqK <TOk, TError>( IKind2 <ResultF, TOk, TError> x, IKind2 <ResultF, TOk, TError> y, IEq <TOk> eqOk, IEq <TError> eqError) => ResultK.Eq(eqOk, eqError).Eqv(x.Fix(), y.Fix());
public static Result <TOk, TError> Fix <TOk, TError>(this IKind2 <ResultF, TOk, TError> self) => (Result <TOk, TError>)self;