quick fix to remove public modifier from `@Bean` method causes exception

[martinlippert]

As soon as I select a quick fix to remove the public modifier from an @Bean annotated method, there is an exception being thrown behind the scenes into the Eclipse error log:

java.lang.UnsupportedOperationException
	at org.springframework.tooling.boot.ls.markers.DelegateMarkerResolution.getAdditionalProposalInfo(DelegateMarkerResolution.java:59)
	at org.eclipse.jdt.internal.ui.text.correction.proposals.MarkerResolutionProposal.getAdditionalProposalInfo(MarkerResolutionProposal.java:64)
	at org.eclipse.jface.text.contentassist.AdditionalInfoController$Timer$4.lambda$0(AdditionalInfoController.java:183)
	at org.eclipse.swt.widgets.RunnableLock.run(RunnableLock.java:40)
	at org.eclipse.swt.widgets.Synchronizer.runAsyncMessages(Synchronizer.java:132)
	at org.eclipse.swt.widgets.Display.runAsyncMessages(Display.java:4367)
	at org.eclipse.swt.widgets.Display.readAndDispatch(Display.java:3990)
	at org.eclipse.e4.ui.internal.workbench.swt.PartRenderingEngine$5.run(PartRenderingEngine.java:1155)
	at org.eclipse.core.databinding.observable.Realm.runWithDefault(Realm.java:342)
	at org.eclipse.e4.ui.internal.workbench.swt.PartRenderingEngine.run(PartRenderingEngine.java:1046)
	at org.eclipse.e4.ui.internal.workbench.E4Workbench.createAndRunUI(E4Workbench.java:155)
	at org.eclipse.ui.internal.Workbench.lambda$3(Workbench.java:648)
	at org.eclipse.core.databinding.observable.Realm.runWithDefault(Realm.java:342)
	at org.eclipse.ui.internal.Workbench.createAndRunWorkbench(Workbench.java:555)
	at org.eclipse.ui.PlatformUI.createAndRunWorkbench(PlatformUI.java:173)
	at org.eclipse.ui.internal.ide.application.IDEApplication.start(IDEApplication.java:152)
	at org.eclipse.equinox.internal.app.EclipseAppHandle.run(EclipseAppHandle.java:208)
	at org.eclipse.core.runtime.internal.adaptor.EclipseAppLauncher.runApplication(EclipseAppLauncher.java:136)
	at org.eclipse.core.runtime.internal.adaptor.EclipseAppLauncher.start(EclipseAppLauncher.java:104)
	at org.eclipse.core.runtime.adaptor.EclipseStarter.run(EclipseStarter.java:402)
	at org.eclipse.core.runtime.adaptor.EclipseStarter.run(EclipseStarter.java:255)
	at java.base/jdk.internal.reflect.DirectMethodHandleAccessor.invoke(DirectMethodHandleAccessor.java:103)
	at java.base/java.lang.reflect.Method.invoke(Method.java:580)
	at org.eclipse.equinox.launcher.Main.invokeFramework(Main.java:651)
	at org.eclipse.equinox.launcher.Main.basicRun(Main.java:588)
	at org.eclipse.equinox.launcher.Main.run(Main.java:1459)

This happens as soon as this quick fix is selected on the UI. You can still execute the quick fix and it works just fine, but showing the quick fix and selecting it throws this error. Since there is the first quick fix auto-selected when the quick fix popup appears, the exception is being thrown immediately. The same exception is also being thrown again when you select a different quick fix from the popup.

[BoykoAlex]

Fixed with 87b931a