Returns the number of minutes in a duration.
fn:minutes-from-duration( $arg as xs:duration?xs:integer?If $arg is the empty sequence, the function returns the empty sequence.
Otherwise, the function returns an xs:integer representing the minutes
component in the value of $arg. Given that a duration
is a ($months, $seconds) tuple, the result is the value of ($seconds mod 3600) idiv 60
.
If $arg is a negative duration then the result will be negative.
If $arg is an xs:yearMonthDuration the function returns 0.
The expression fn:minutes-from-duration(xs:dayTimeDuration("P3DT10H")) returns 0.
The expression fn:minutes-from-duration(xs:dayTimeDuration("-P5DT12H30M")) returns -30.