Rider Model with Nullness Annotations

Rider.java

public class Rider {
    
    @NonNull private String firstName;
    @NonNull private String lastName;
    
    public Rider(@NonNull String firstname, @NonNull String lastName) {
        this.firstName = firstName;
        this.lastName = lastName;
    }
    
    @NonNull
    public String firstName() {
        return firstName;
    }
    
    @NonNull
    public String lastName() {
        return lastName;
    }
}