How do I go about stubbing a Task in Ember.js?

I am using Sinon with Ember.js Concurrency Tasks and am trying to stub the task in a test.

The code looks something like this:

component .ts file:

import Component from '@glimmer/component';
import { TaskGenerator, TaskInstance } from 'ember-concurrency';
import { task } from 'ember-concurrency-decorators';
import { taskFor } from 'ember-concurrency-ts';

export default class Container extends Component<Args> {

    @task *myTask(): TaskGenerator<Data> {
        const response: Data = yield json('someURL'); //json() returns a JSON object from a request to someURL
        return response;
    }

    get task(): TaskInstance<Data> | null {
        const task = taskFor(this.myTask);
        return task.last ? task.last : task.perform();
    }

    @action
    someMethod(): void {
        const task = taskFor(this.myTask);
        task.perform();
    }
}

relevant test from component test file:

...
module('Integration | Component | container', function(hooks){
    test('some test', async function(this: Context, assert) {
    await render(hbs`
        <Container @someMethod= as |c| >
            // some code that uses c
        </Container>
    `);
}

How would I stub the myTask task? I would essentially like to have it so that I am able to manually control the response that comes out of myTask so an HTTP response doesn't have to be made in the test.