"Cannot find effigy for top level: "
+ toplevel().getFullName());
}
try {
ExpressionShellEffigy shellEffigy = new ExpressionShellEffigy(
containerEffigy, containerEffigy.uniqueName("shell"));
// The default identifier is "Unnamed", which is no good for
// two reasons: Wrong title bar label, and it causes a save-as
// to destroy the original window.