xwiki/xwiki-commons — comment on commit da611bbf6730a4fda41c88bb606c7afa0f39aae2
File: xwiki-commons-core/xwiki-commons-component/xwiki-commons-component-default/src/main/java/org/xwiki/component/embed/EmbeddableComponentManager.java line 383
By tmortagne:

If it's not a singleton you should not have any object stored anyway so this test is not really needed IMO.