java.util.concurrent.TimeoutException
	at java.base/java.util.concurrent.CompletableFuture.timedGet(CompletableFuture.java:1886)
	at java.base/java.util.concurrent.CompletableFuture.get(CompletableFuture.java:2021)
	at org.eclipse.lsp4e.outline.EditorToOutlineAdapterFactory.getAdapter(EditorToOutlineAdapterFactory.java:47)
	at org.eclipse.core.internal.adapter.AdapterFactoryProxy.getAdapter(AdapterFactoryProxy.java:85)
	at org.eclipse.core.internal.runtime.AdapterManager.getAdapter(AdapterManager.java:298)
	at org.eclipse.ui.part.WorkbenchPart.getAdapter(WorkbenchPart.java:145)
	at org.eclipse.ui.texteditor.AbstractTextEditor.getAdapter(AbstractTextEditor.java:6182)
	at org.eclipse.ui.texteditor.AbstractDecoratedTextEditor.getAdapter(AbstractDecoratedTextEditor.java:1428)
	at org.eclipse.ui.editors.text.TextEditor.getAdapter(TextEditor.java:163)
	at org.eclipse.core.runtime.Adapters.adapt(Adapters.java:62)
	at org.eclipse.core.runtime.Adapters.adapt(Adapters.java:110)
	at org.eclipse.ui.views.contentoutline.ContentOutline.doCreatePage(ContentOutline.java:132)
	at org.eclipse.ui.part.PageBookView.createPage(PageBookView.java:378)
	at org.eclipse.ui.part.PageBookView.partActivated(PageBookView.java:718)
	at org.eclipse.ui.part.PageBookView$1.partActivated(PageBookView.java:1031)
	at org.eclipse.ui.internal.WorkbenchPage$4.run(WorkbenchPage.java:5083)
	at org.eclipse.core.runtime.SafeRunner.run(SafeRunner.java:45)
	at org.eclipse.ui.internal.WorkbenchPage.firePartActivated(WorkbenchPage.java:5080)
	at org.eclipse.ui.internal.WorkbenchPage.access$3(WorkbenchPage.java:5056)
	at org.eclipse.ui.internal.WorkbenchPage$E4PartListener.partActivated(WorkbenchPage.java:214)
	at org.eclipse.e4.ui.inte