@SuppressWarnings("unchecked")
  public static final <T> TypeLiteral<Set<T>> setOf(Class<T> type) {
    return (TypeLiteral<Set<T>>) TypeLiteral.get(Types.setOf(type));
  }
Starts the api server, currently the reference implementation.
portability-api/src/main/java/org/datatransferproject/api/ApiMain.java