Returns the minutes component of an xs:time.
fn:minutes-from-time( $arg as xs:time?xs:integer?If $arg is the empty sequence, the function returns the empty sequence.
Otherwise, the function returns an xs:integer value between 0 and 59, both
inclusive, representing the value of the minutes component in the local value of
$arg.
The expression fn:minutes-from-time(xs:time("13:00:00Z")) returns 0.