iron-overlay-behavior tests Basic Overlay Basic Overlay Autofocus button Focusables (no tabindex) 1 disabled button not focusable 2 Focusables (with tabindex) not focusable 3 4 5 1 (nested) 6 (nested) 2 Overlay with optimized focusableNodes getter 1 Overlay with backdrop Test overlay 1 Test overlay 2 Click Other overlay 3