A version of the %Collection.ListOfObjects collection class that stores class names in OIDs. These %Collection classes can only be used when you have a collection property of another object as they rely on storing the data inside the parent object, they can not be used as 'stand alone' collections, for this use the %ListOfObjectsWithClassName.
Starting from, but not including, position key, Find finds the next element in the list whose OID value equals element. If key is a null string, Find starts at the beginning of the list. method Serialize(force As %Integer = 0) as %String
Find returns the position of the found element or null string ("") if no element was found.
Serialize() constructs a serialized form of the collection as a string