I have a ES6 Vehicle class defined below. I want to have a static method such that I can use with or without parenthesis. I have defined static AvailableTypes and static AvailableTypes() but it gives an error TypeError: Vehicle.AvailableTypes is not a function

class Vehicle {
  constructor({ vehicleType = 'car', name = '', range = '', seats = '' }) {
    this.vehicleType = vehicleType
    this.name = name
    this.range = range
    this.seats = seats
  }

  getRangeToSeatsRatio() {
    return this.range / this.seats
  }

  get rangeToSeatsRatio() {
    return this.range / this.seats
  }

  static AvailableTypes = ['car', 'plane']
  static  AvailableTypes() {
    return this.AvailableTypes
  }
}

const vehicle = new Vehicle({ name: 'My Car name', seats: 500, wheels: 45 })
console.log(Vehicle.AvailableTypes) // (2) ['car', 'plane']
console.log(Vehicle.AvailableTypes()) //TypeError: Vehicle.AvailableTypes is not a function

This should result in availableVehicleTypes being ['car', 'plane']

const availableVehicleTypes = Vehicle.AvailableTypes;

This should also result in availableVehicleTypes being ['car', 'plane']

const availableVehicleTypes = Vehicle.AvailableTypes();