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java.lang.ClassCastException: java.lang.Integer cannot be cast to java.lang.String
java.util.concurrent.CompletionException: java.lang.ClassCastException: com.ge.research.sadl.external.ExternalEmfResource cannot be cast to org.eclipse.xtext.resource.XtextResource at java.util.concurrent.CompletableFuture.encodeThrowable(CompletableFuture.java:292) at java.util.concurrent.CompletableFuture.completeThrowable(CompletableFuture.java:308) at java.util.concurrent.CompletableFuture.uniAccept(CompletableFuture.java:647) at java.util.concurrent.CompletableFuture$UniAccept.tryFire(CompletableFuture.java:632) at java.util.concurrent.CompletableFuture.postComplete(CompletableFuture.java:474) at java.util.concurrent.CompletableFuture.completeExceptionally(CompletableFuture.java:1977) at org.eclipse.xtext.ide.server.concurrent.ReadRequest.lambda$run$0(ReadRequest.java:43) at java.util.concurrent.FutureTask.run(FutureTask.java:266) at java.util.concurrent.ThreadPoolExecutor.runWorker(ThreadPoolExecutor.java:1142) at java.util.concurrent.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:617) at java.lang.Thread.run(Thread.java:745)Caused by: java.lang.ClassCastException: com.ge.research.sadl.external.ExternalEmfResource cannot be cast to org.eclipse.xtext.resource.XtextResource at org.eclipse.xtext.ide.server.WorkspaceManager.doRead(WorkspaceManager.java:278) at org.eclipse.xtext.ide.server.LanguageServerImpl.lambda$documentSymbol$35(LanguageServerImpl.java:609) at org.eclipse.xtext.ide.server.concurrent.ReadRequest.lambda$run$0(ReadRequest.java:37) ... 4 more