Function test_find_sibling 

pub fn test_find_sibling(
    base_widget: &impl IsA<Widget>,
    widget_type: Type,
) -> Option<Widget>

This function will search siblings of base_widget and siblings of its ancestors for all widgets matching widget_type. Of the matching widgets, the one that is geometrically closest to base_widget will be returned. The general purpose of this function is to find the most likely “action” widget, relative to another labeling widget. Such as finding a button or text entry widget, given its corresponding label widget.

base_widget

Valid widget, part of a widget hierarchy

widget_type

Type of a aearched for sibling widget

Returns

a widget of type widget_type if any is found.