coerce
Returns the selectable duration closest to duration. Equal distances prefer the smaller duration.
Parameters
duration
The finite, non-negative, whole-minute duration to coerce.
Throws
if duration is not finite, non-negative, and aligned to a whole minute, or if these item sources are invalid or contain no allowed combination.
Returns the selectable duration closest to the requested hours and minutes.
Parameters
hours
The requested non-negative elapsed whole-hour component.
minutes
The requested minute-within-hour component in 0..59.
Throws
if the requested parts or item sources are invalid.