Lce.java

// Lce -> Loading / Content / Error
class Lce<T> {
  public static <T> Lce<T> data(T data) {
    // implementation
  }
  public static <T> Lce<T> error(Throwable error) {
    // implementation
  }
  public static <T> Lce<T> loading() {
    // implementation
  }
  boolean isLoading();
  boolean hasError();
  Throwable getError();
  T getData();
}