addCountry.java

// remove the countriesPresent method in the inner Builder class and replace it with the method below

public Builder addCountry(String countriesPresent){
  this.countriesPresent.add(countriesPresent);
  return this;
}

// Inside of .countriesPresent(List.of("Mexico", "Brazil")) with  .addCountry("Kenya").addCountry("Uganda") in the Main.java
 Car car3 = new Car.Builder()
   .make("Ford")
   .name("Mastunga")
   .color("Red")
   .model(2023)
   .addCountry("Kenya")
   .addCountry("Uganda")
   .build();