import com.intellij.ide.util.treeView.AbstractTreeNode;
import com.intellij.ide.util.treeView.AbstractTreeUpdater;
import com.intellij.openapi.actionSystem.AnActionEvent;
import com.intellij.openapi.actionSystem.DefaultActionGroup;
import com.intellij.openapi.actionSystem.Presentation;
<BUG>import com.intellij.openapi.actionSystem.ToggleAction;
import com.intellij.openapi.project.Project;</BUG>
import com.intellij.openapi.util.InvalidDataException;
import com.intellij.openapi.util.JDOMExternalizerUtil;
import com.intellij.openapi.util.WriteExternalException;

import com.intellij.ide.util.treeView.AbstractTreeNode;
import com.intellij.ide.util.treeView.AbstractTreeUpdater;
import com.intellij.openapi.actionSystem.AnActionEvent;
import com.intellij.openapi.actionSystem.DefaultActionGroup;
import com.intellij.openapi.actionSystem.Presentation;
import com.intellij.openapi.actionSystem.ToggleAction;
import com.intellij.openapi.project.DumbAware;
import com.intellij.openapi.project.Project;
import com.intellij.openapi.util.InvalidDataException;
import com.intellij.openapi.util.JDOMExternalizerUtil;
import com.intellij.openapi.util.WriteExternalException;
