read the questions carefully please AddDestination Add code to the supplied AddDestination(Destination site) method to c

[answerhappygod]

read the questions carefully please
AddDestination
Add code to the supplied AddDestination(Destination site) method to check that
a) the parameter has a value and
b) the destination site does not already exist on the list of sites for the Tour. The Location and Visit date combination must be unique. Example: St. John NS on Jun 12 2022 is different than St. John NS on Jun 13 2022; CharlettTown NS on Aug 12 2022 is different than St. John NS on Aug 12 2022. However: St. John NS on Jun 12 2022 is the same as St. John NS on Jun 12 2022. If the destination passes both validations, add to the list of Sites.
RemoveDestination
Add code to the supplied RemoveDestination(Destination site) method to check that
a) the parameter has a value and
b) the destination site exists on the list of sites for the Tour. The Location and Visit date submitted must match the destination exactly to be removed. Remove the destination from the list of Sites if a match was found.