this     - value: com.sun.tools.javac.code.Symtab #3
 <- syms     - class: com.sun.tools.javac.model.JavacElements, value: com.sun.tools.javac.code.Symtab #3
  <- elements     - class: org.netbeans.lib.nbjavac.services.NBJavacTrees, value: com.sun.tools.javac.model.JavacElements #3
   <- trees     - class: org.netbeans.api.java.source.CompilationController, value: org.netbeans.lib.nbjavac.services.NBJavacTrees #3
    <- obj     - class: org.openide.util.lookup.InstanceContent$SimpleItem, value: org.netbeans.api.java.source.CompilationController #3
     <- [1]     - class: java.lang.Object[], value: org.openide.util.lookup.InstanceContent$SimpleItem #1100
      <- content     - class: org.openide.util.lookup.ArrayStorage, value: java.lang.Object[] #433550 (3 items)
       <- tree     - class: org.openide.util.lookup.AbstractLookup, value: org.openide.util.lookup.ArrayStorage #3596
        <- delegate     - class: org.netbeans.modules.refactoring.api.Context, value: org.openide.util.lookup.AbstractLookup #94
         <- scope     - class: org.netbeans.modules.refactoring.api.WhereUsedQuery, value: org.netbeans.modules.refactoring.api.Context #4
          <- query     - class: org.netbeans.modules.refactoring.java.ui.WhereUsedQueryUI, value: org.netbeans.modules.refactoring.api.WhereUsedQuery #4
           <- ui     - class: org.netbeans.modules.refactoring.spi.impl.RefactoringPanel, value: org.netbeans.modules.refactoring.java.ui.WhereUsedQueryUI #4
            <- [6]     - class: java.lang.Object[], value: org.netbeans.modules.refactoring.spi.impl.RefactoringPanel #4
             <- elementData     - class: java.util.ArrayList, value: java.lang.Object[] #506421 (15 items)
              <- component     - class: org.netbeans.core.windows.view.ui.CloseButtonTabbedPane, value: java.util.ArrayList #43097
               <- parent     - class: org.netbeans.modules.refactoring.spi.impl.RefactoringPanel, value: org.netbeans.core.windows.view.ui.CloseButtonTabbedPane #5
                <- this$0 (Java frame)     - class: org.netbeans.modules.refactoring.spi.impl.RefactoringPanel$4, value: org.netbeans.modules.refactoring.spi.impl.RefactoringPanel #10