public Task addOnFailureListener(Activity arg0, OnFailureListener arg1)
 {
     return(Call <Task> ("addOnFailureListener", arg0, arg1));
 }
 public Task addOnFailureListener(Executor arg0, OnFailureListener arg1)
 {
     return(Call <Task> ("addOnFailureListener", arg0, arg1));
 }
 public Task addOnFailureListener(OnFailureListener arg0)
 {
     return(Call <Task> ("addOnFailureListener", arg0));
 }