Class NotFoundError public

A NotFoundError equates to a HTTP 404 Not Found response status. It is used by an adapter to signal that a request to the external API was rejected because the resource could not be found on the API.

An example use case would be to detect if the user has entered a route for a specific model that does not exist. For example:

```js {data-filename=app/routes/post.js} import Route from '@ember/routing/route'; import { NotFoundError } from '@ember-data/adapter/error'; import { inject as service } from '@ember/service'; import { action } from '@ember/object';

export default class PostRoute extends Route {