query QueryAllCars {
  cars {
    id
    brand
    model
    owners {
      name
    }
  }
}

query GenerateLicensePlate {
  generateLicensePlate {
    value
  }
}

mutation AddCar {
  addCar(carInput: {
    brand: "Opel"
    model: "Ascona"
  }
 ) {
    id
    brand
    model
  }
}