}
	selectingObject := m.selectingObjects[key]
	selectorKey := selectingObject.selectorKey
	defer delete(m.selectingObjects, key)
	if _, ok := m.labeledBySelecting[selectorKey]; !ok {
		// No associations.
		return
	}
	// Remove associations.
	for _, labeledObject := range m.labeledBySelecting[selectorKey].objects {
		labelsKey := labeledObject.labelsKey
		// Delete labeledObject to selectingObject association.