Bug 36514 call hierarchy: should remove 'search ... using ..' preferences
we should decide whether the answer should be true or false and remove the preference settings - no user will ever understand what the setting means
org.eclipse.jdt.ui/ui/org/eclipse/jdt/internal/ui/callhierarchy/CallHierarchyViewPart.java
private RefreshAction fRefreshAction;
    private OpenLocationAction fOpenLocationAction;
    private FocusOnSelectionAction fFocusOnSelectionAction;
    private CompositeActionGroup fActionGroups;
    private CallHierarchyViewer fCallHierarchyViewer;
    private boolean fShowCallDetails;
    public CallHierarchyViewPart() {
        super();
        fDialogSettings = JavaPlugin.getDefault().getDialogSettings();
        fMethodHistory = new ArrayList();
    }
    public void setFocus() {
        fPagebook.setFocus();
    }
    /**
     * Sets the history entries
     */
    public void setHistoryEntries(IMethod[] elems) {
        fMethodHistory.clear();
        for (int i = 0; i < elems.length; i++) {
            fMethodHistory.add(elems[i]);
        }
        updateHistoryEntries();
    }
    /**
     * Gets all history entries.
     */
    public IMethod[] getHistoryEntries() {
        if (fMethodHistory.size() > 0) {
            updateHistoryEntries();