Cannot set tooltip to ComponentWithBrowseButton's button

223.7571.123-EAP-SNAPSHOT

My class extends ComponentWithBrowseButton and I need to set a tooltip text for the button. I use 

getButton().setToolTipText("My text");

But the method getButton is marked as Deprecated with forRemoval=true. So I look for a legal way to set the tooltip. The ComponentWithBrowseButton's constructor contains the code:

myBrowseButton.setToolTipText(getIconTooltip());
// FixedSizeButton isn't focusable but it should be selectable via keyboard.
if (ApplicationManager.getApplication() != null) {  // avoid crash at design time
  new MyDoClickAction(myBrowseButton).registerShortcut(myComponent);
}

Looks like it allows to customise tooltip through the overriding getIconTooltip, but registerShortcut sets own tooltip text anyway.