mentoring continued I hope

Hello, I have this challenge from exercism : https://github.com/exercism/pharo-smalltalk/tree/master/exercises/clock and this function is given : hour: anInteger minute: anInteger2     self shouldBeImplemented Schould I make it on this class method work that the minutes will not exceed the 59 minutes So when for example when 70 min are given so hour:0  minute:70 it will be converted to hour: 1 minutes: 10 or can I better do this on the instance side. Regards, Roelof