getLicencesJson example

$collection = new ExtensionCollection();
        $collection->set('myPlugin', (new ExtensionStruct())->assign(['name' => 'myPlugin', 'label' => 'Label', 'version' => '1.0.0']));
        $collection = $this->extensionListingLoader->load($collection, $this->createAdminStoreContext());

        static::assertCount(1, $collection);
    }

    public function testExternalAreAdded(): void
    {
        $this->getRequestHandler()->reset();
        $this->getRequestHandler()->append(new Response(200, [], '{"data":[]}'));
        $this->getRequestHandler()->append(new Response(200, [], $this->getLicencesJson()));

        $collection = new ExtensionCollection();
        $collection->set('myPlugin', (new ExtensionStruct())->assign(['name' => 'myPlugin', 'label' => 'Label', 'version' => '1.0.0', 'active' => true]));
        $collection->set('myPlugin2', (new ExtensionStruct())->assign(['name' => 'myPlugin2', 'label' => 'Label', 'version' => '1.0.0', 'installedAt' => new \DateTime()]));
        $collection = $this->extensionListingLoader->load($collection, $this->createAdminStoreContext());

        /** @var ExtensionStruct $extension */
        $extension = $collection->get('SwagApp');
        static::assertSame('app', $extension->getType());
        static::assertSame('store', $extension->getSource());
        static::assertCount(8, $collection);
    }