protected void restore2DBounds() {
        setLeft(mOldLeft);
        setTop(mOldTop);
        setRight(mOldRight);
        setBottom(mOldBottom);
    }
Explicitly call setMaterials again with mMaterials. Allows children who override
setMaterials to modify them.
android/viro_bridge/src/main/java/com/viromedia/bridge/component/node/VRTNode.java