DDS4CCM_ — why not use an exception instead of a return value for the methods in Getter<>?

why not use an exception instead of a return value for the methods in Getter<>? On line 28, it should say "return as result" when decided to keep bool. For the time_out, what about making this an argument of all methods, is setting this at this level at the correct level?

Proposed solution
1. keep the boolean as result and correct the text line 28
2. let the time_out as an attribute as purpose is to simplify as much as
possible the API . Reducing the number of parameters goes in that
direction. We noticed in our systems that time-out value was unlikely to
change from one call to another, making it a recurring value is therefore
sensible;