Find all X11 top-level window that match the specified criteria.

• Title is the title of the window. It is stored in the WM_NAME X11 window property.
• Application is the class of the window. It is usually the name of the application that created the window. It is stored in the WM_CLASS X11 window property.
• Role is the role of the window. It is stored in the WM_WINDOW_ROLE X11 window property.

All these arguments are regular expressions, as defined by the LIKE operator.

This method returns an array of X11 window identifier.