Interface IAttributeChangeInfo<V>

The Id of the container that is initiated the change (not the immediate sender -- which is always the parent) As children only receive listener notifications from their parent in reaction to both changes they make and any changes they receive from their parent

The key that was changed (only present for 'set' operations)

Operation type that occurred

The old value (only present for 'set' operations when replacing existing value)

The new value (only present for 'set' operations)