int heightOffset,
boolean separatorAfter)
{
Commands commands = RStudioGinjector.INSTANCE.getCommands();
AppCommand presHome = commands.presentationHome();
homeButton_ = new ToolbarButton(presHome.getImageResource(), null);
homeButton_.setTitle(presHome.getTooltip());
toolbar.addLeftWidget(homeButton_);
homeSeparatorWidget_ = toolbar.addLeftSeparator();