test.cpp

class MainCommand;
class MainSucceededCommand;
class MainFailedCommand;

class MyControllerWithStartMethod
{
public:
    void start()
    {
        CommandBuilder<MainCommand> builder;
        builder.onSucceeded([this]{ onFistSucceeded(); });
        builder.onFailed([this]{ onFirstFailed(); });

        Command cmd = builder.build();
        cmd.execute();
    }


private:
    void onFirstSucceded()
    {
        CommandBuilder<MainSucceededCommand> builder;
        builder.onSucceeded([]
        {
        });
        builder.onFailed({
        });

        Command cmd = builder.build();
        cmd.execute();
    }

    void onFirstFailed()
    {
        CommandBuilder<MainFailedCommand> builder;
        builder.onSucceeded([]
        {
        });
        builder.onFailed({
        });

        Command cmd = builder.build();
        cmd.execute();
    }
};