Describes the different picker types along with their stepping function.

-- An `Hours` and `Minutes` picker. The `Hours` part
-- will increment / decrement their value by 1 whereas
-- the `Minutes` will increment / decrement by 5.
HH_MM { hoursStep = 1, minutesStep = 5 }


-- An `Hours`, `Minutes` and `Seconds` picker.
-- The `Hours` and `Minutes` will increment / decrement
-- their values by 1 whereas the `Seconds` will
-- increment / decrement by 10.
HH_MM_SS { hoursStep = 1, minutesStep = 1, secondsStep = 10 }