Cannot reference: org.eclipse.core.internal.runtime.InternalPlatform getAdapterManager(...) 165 getDefault(...) 165 org.eclipse.ui.internal.registry.WorkingSetDescriptor isEditable(...) 149 org.eclipse.ui.internal.registry.WorkingSetRegistry getWorkingSetDescriptor(...) 146 org.eclipse.ui.internal.WorkbenchPlugin getWorkingSetManager(...) 310 getDefault(...) 142 310 getWorkingSetRegistry(...) 142