tryRemoveKeyDeferred

tryRemoveKeyDeferred(keys: KeyType): MemberType, receiverByReference, 
                                   updating;

The tryRemoveKeyDeferred method of the ExtKeyDictionary class attempts to remove an item with a specified key from a dictionary if it is present. For persistent dictionaries, the attempt is queued and executed when the database transaction commits. For transient dictionaries, the attempt is executed immediately.

This method returns true if the dictionary is persistent or the dictionary is transient and an object with the specified key was removed; otherwise it returns false.

2020.0.01 and higher