Implementing the domain model

First of all, do the following:

1. Create a domain folder inside src. We'll put all of our domain-related modules inside of it.
2. Now, go ahead and create a country.ts file within the src/domain folder.

In that file, define the Country class:

export class Country { 
    constructor( 
        private _name: string, 
        private _id: string, 
        private _iso2Code: string, 
        private _capitalCity: string, 
        private _longitude: string, 
        private _latitude: string 
    ) { 
    } 
} 

Inside the class, add the following accessors:

    get name() { 
        return this._name; 
    }
    get id(): string { 
        return this._id; 
    } 
    get iso2Code(): string { 
        return this._iso2Code; 
    } 
    get capitalCity(): string { 
        return this._capitalCity; 
    } 
    get longitude(): string { 
        return...