Returns a Bag containing all elements of self.

The asBag() operator converts a value or collection into a Bag, which is an unordered collection that allows duplicate elements. Unlike a Set, a Bag does not enforce uniqueness, meaning the same element can appear multiple times. This operator is useful when you want to preserve duplicate entries while still working with collection-based OCL operations. When applied to a single object, asBag() wraps it into a Bag containing that one element; when applied to an existing collection, it keeps all duplicates intact.

Expression	Result
Sequence{'3', 1, 2.0, '3'}->asBag()	Bag{2.0, '3', 1, '3'}
Bag{1, 2.0, '3'}->asBag()	Bag{2.0, 1, '3'}
OrderedSet{1, 2.0, '3'}->asBag()	Bag{2.0, 1, '3'}
OrderedSet{1, 1, 2.0, '3'}->asBag()	Bag{'3', 1, 2.0}
Set{1, 2.0, '3'}->asBag()	Bag{2.0, 1, '3'}
Set{1, 1, 2.0, '3'}->asBag()	Bag{2.0, '3', 1}

Example:

Department.allInstances.asBag()

This returns a Bag of Department objects, including duplicates if they exist.