angular-checkbox-set

$scope.grandParent: {"identity":"gp"}
$scope.parents: [
            

{"identity":"p1"}

{"identity":"p2"}

]
$scope.childrenA: [
            

{"identity":"ca1"}

{"identity":"ca2"}

{"identity":"ca3"}

]
$scope.childrenB: [
            

{"identity":"cb1"}

{"identity":"cb2"}

]