New Test
open /run/com.vaadin.tests.widgetset.server.ReplaceComponentUI?restartApplication
assertText vaadin=runcomvaadintestswidgetsetserverReplaceComponentUI::/VVerticalLayout[0]/VOrderedLayout$Slot[1]/VVerticalLayout[0]/VOrderedLayout$Slot[0]/HTML[0] com.vaadin.tests.widgetset.client.ReplacingConnector, this is the right one