unfocus method
Implementation
Future<Online> unfocus(AbstractSelector selector, {bool show = true}) async {
if (show) Show.unfocusing(selector.selector);
var selected = selector is XPath
? await (await page).waitForXPath(selector.selector)
: await (await page).waitForSelector(selector.selector);
if (selected != null) {
await selected.evaluate('''(element) => {
element.blur();
}''');
}
return this;
}