type Animal interface {EaterBreathe()Sleep(durationtime.Duration)}

type Car[FuelTypefuel.Fuel] interface {Brand()stringFuelTank()cars.FuelTank[FuelType]Refuel(fuel FuelType, volumeint)error}

type Counter interface {int}

type Driver[FuelTypefuel.Fuel, CarTypeCar[FuelType]] interface {Wroom()errorDrive(car CarType)}

type Earth interface {AddHumans(HumansCount) []HumanHumanPopulation()HumansCount}

type Eater interface {Eat(foods ...Food)}

type Farmer interface {HumanDriver[fuel.Diesel,cars.FordF150]Do(work *Work)errorLivesInAVillage()}

type Food interface {Calories()int}

type Human =Primate

type HumansCount =int

type PrimateAnimal

type UrbanResident interface {HumanDriver[fuel.Gasoline,cars.HyundaiSolaris]Do(work *Work)errorLivesInACity()}

type Work struct {Namestring}