cl.add ("scope", CommandLine::Argument::Optional, "Ambito");
cl.add ("user", CommandLine::Argument::Optional, "Usuario");
cl.add ("password", CommandLine::Argument::Optional, "Password");
cl.add ("scope", CommandLine::Argument::Optional, "Ambito");
cl.add ("user", CommandLine::Argument::Optional, "Usuario");
cl.add ("password", CommandLine::Argument::Optional, "Password");