private static State Prep(bool accept)
 {
     if (CustomInput.AnyInput())
     {
         return(State.Prep);
     }
     return(State.GettingKey);
 }
 private static State Holding(bool accept)
 {
     if (CustomInput.AnyInput())
     {
         return(State.Holding);
     }
     return(prevState);
 }