Сделал сворачивание через меню настроек.

src/Visual_DVM_2021/UI/Interface/FileWindow.java

@@ -61,9 +61,7 @@ public interface FileWindow extends VisualizerForm{
     //--
     void CollapseGraphs();
     void ExpandGraphs();
-    void SwitchGraphs();
     //--
     void CollapseMessages();
     void ExpandMessages();
-    void SwitchMessages();
 }

src/Visual_DVM_2021/UI/Interface/ProjectWindow.java

@@ -80,5 +80,4 @@ public interface ProjectWindow {
     //--
     void CollapseProjectTrees();
     void ExpandProjectTrees();
-    void SwitchProjectTrees();
 }

src/Visual_DVM_2021/UI/Interface/TestingWindow.java

@@ -34,5 +34,4 @@ public interface TestingWindow extends VisualizerForm {
     void ShowDVMPackage(DVMPackage master);
     void CollapseCredentials();
     void ExpandCredentials();
-    void SwitchCredentials(boolean flag);
 }