Docs for merge option in createAsyncResourceBundle?

[jvega]

I found this option in the bundle but I don't find any doc

Exists a better way to set this option ...

const promise = ({ apiFetch }) => {
	return apiFetch('resources')
}
const bundle = createAsyncResourceBundle({
	name: 'resource',
	getPromise: promise
})
bundle.doFetchResource =() => args => {
	const { dispatch } = args
	dispatch({ type: 'RESOURCE_FETCH_STARTED' })
	return promise(args).then(
		payload => {
			dispatch({
				type: 'RESOURCE_FETCH_FINISHED',
				payload,
				merge: true // <- option
			})
		},
		error => {
			dispatch({ type: 'RESOURCE_FETCH_FAILED', error })
		}
	)
}

[HenrikJoreteg]

@jvega good point, would be happy for a PR from someone adding this.