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No property tester contributes a property isBeansConfig to type class org.eclipse.core.internal.resources.File
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org.eclipse.core.runtime.CoreException: No property tester contributes a property isBeansConfig to type class org.eclipse.core.internal.resources.File at org.eclipse.core.internal.expressions.TypeExtensionManager.getProperty(TypeExtensionManager.java:109) at org.eclipse.core.internal.expressions.TestExpression.evaluate(TestExpression.java:77) at org.eclipse.core.internal.expressions.CompositeExpression.evaluateAnd(CompositeExpression.java:53) at org.eclipse.core.internal.expressions.AndExpression.evaluate(AndExpression.java:29) at org.eclipse.core.internal.expressions.CompositeExpression.evaluateOr(CompositeExpression.java:68) at org.eclipse.core.internal.expressions.OrExpression.evaluate(OrExpression.java:21) at org.eclipse.ui.internal.navigator.CustomAndExpression.evaluate(CustomAndExpression.java:70) at org.eclipse.ui.internal.navigator.extensions.NavigatorContentDescriptor.isTriggerPoint(NavigatorContentDescriptor.java:336) at org.eclipse.ui.internal.navigator.extensions.NavigatorContentDescriptorManager.findDescriptorsForTriggerPoint(NavigatorContentDescriptorManager.java:171) at org.eclipse.ui.internal.navigator.NavigatorContentService.findDescriptorsByTriggerPoint(NavigatorContentService.java:705) at org.eclipse.ui.internal.navigator.NavigatorContentService.findContentExtensionsByTriggerPoint(NavigatorContentService.java:584) at org.eclipse.ui.internal.navigator.NavigatorContentService.findContentExtensionsByTriggerPoint(NavigatorContentService.java:566) at org.eclipse.ui.internal.navigator.NavigatorContentServiceContentProvider.hasChildren(NavigatorContentServiceContentProvider.java:644) at org.eclipse.jface.viewers.AbstractTreeViewer.isExpandable(AbstractTreeViewer.java:1898) at org.eclipse.jface.viewers.AbstractTreeViewer.updatePlus(AbstractTreeViewer.java:2487) at org.eclipse.jface.viewers.AbstractTreeViewer.createTreeItem(AbstractTreeViewer.java:754) at org.eclipse.ui.navigator.CommonViewer.createTreeItem(CommonViewer.java:150)