CommandCollection
CommandConfigurator
CommandDictionary
CommandExecutable
CommandUnmapper

final CommandMapperDictionary commandMapperDictionary = CommandMapperDictionaryImpl.create(Executors.newSingleThreadExecutor());
final CommandMapper commandMapper = CommandMapper.create(commandMapperDictionary);

this.commandMapper.one(true);  //only one execution by command

final String command = "commandRunnable";
final Runnable runnable = (Runnable) () -> { ... };
commandMapper.addCommand(command,runnable);

final String command = "commandCalable";
final Callable<T> callable = (Callable<T>) () -> { ...  return (T)... ; };
commandMapper.addCommand(command,callable);

final String command = e.getActionCommand();
final T valueCompleted = commandMapper.execute(command);   

final String command = e.getActionCommand();
final CompletableFuture<T> completed = commandMapper.execute(command);   //Here, the promise is in second plane.
T value = completed.get();    // Waiting to resolution of the promise

final String command = e.getActionCommand();
commandMapper.unMapper(command);

commandMapper.unMapperAll();

final int size = commandMapper.size();