required if this optional argument follows another argument.
Below the method is more detailed information on each of the arguments. The type
-of argument is notated by either the common types: [`String`](https://developer.mozilla.org/en-US/docs/Web/JavaScript/Reference/Global_Objects/String), [`Number`](https://developer.mozilla.org/en-US/docs/Web/JavaScript/Reference/Global_Objects/Number), [`Object`](https://developer.mozilla.org/en-US/docs/Web/JavaScript/Reference/Global_Objects/Object), [`Array`](https://developer.mozilla.org/en-US/docs/Web/JavaScript/Reference/Global_Objects/Array)
+of argument is notated by either the common types:
+[`String`](https://developer.mozilla.org/en-US/docs/Web/JavaScript/Reference/Global_Objects/String),
+[`Number`](https://developer.mozilla.org/en-US/docs/Web/JavaScript/Reference/Global_Objects/Number),
+[`Object`](https://developer.mozilla.org/en-US/docs/Web/JavaScript/Reference/Global_Objects/Object),
+[`Array`](https://developer.mozilla.org/en-US/docs/Web/JavaScript/Reference/Global_Objects/Array)
or a custom type like Electron's [`webContent`](api/web-content.md).
### Events