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/FocusOnSelectionAction.java
private CallHierarchyViewPart fPart;
    public FocusOnSelectionAction(CallHierarchyViewPart part) {
        super(CallHierarchyMessages.getString("FocusOnSelectionAction.focusOnSelection.text")); 
        fPart= part;
        setDescription(CallHierarchyMessages.getString("FocusOnSelectionAction.focusOnSelection.description")); 
        setToolTipText(CallHierarchyMessages.getString("FocusOnSelectionAction.focusOnSelection.tooltip")); 
        WorkbenchHelp.setHelp(this, IJavaHelpContextIds.CALL_HIERARCHY_FOCUS_ON_SELECTION_ACTION);
    }
    public boolean canActionBeAdded() {
        Object element = SelectionUtil.getSingleElement(getSelection());
        IMethod method = null;
        
        if (element instanceof IMethod) {
            method= (IMethod) element;