How would you translate this snippet of javascript to coffeescript? Specifically I\'m struggling with how to call .property() on the function definition.
MyApp.president = SC.Object.create {
firstName: "Barack",
lastName: "Obama",
fullName: (->
return @get 'firstName' + ' ' + @get 'lastName'
# Call this flag to mark the function as a property
).property('firstName', 'lastName')
}