A modern programming language that makes developers happier.

kotlinlang

and in java I will have to write something like:
```
public class User implements Parcelable {
  private final String firstName;
  private final String lastName;

  public User(String firstName, String lastName) {
    this.firstName = firstName;
    this.lastName = lastName;
  }

  @Override
  public int describeContents() {
    throw new RuntimeException("Will be implemented by Smuggler");
  }

  @Override
  public void writeToParcel(Parcel dest, int flags) {
    throw new RuntimeException("Will be implemented by Smuggler");
  }
}
```