Returns a copy of this
ZonedDateTime with the specified number of minutes added.
This operates on the instant time-line, such that adding one minute will always be a duration of one minute later. This may cause the local date-time to change by an amount other than one minute. Note that this is a different approach to that used by days, months and years.
This instance is immutable and unaffected by this method call.
|the minutes to add, may be negative|
ZonedDateTime based on this date-time with the minutes added, not null
|if the result exceeds the supported date range|