Tobscure\JsonApi\Document::setData PHP Method

    public function setData(ElementInterface $element)
    {
        $this->data = $element;
        return $this;
    }

 public function testToArrayIncludesTheResourcesRepresentation()
 {
     $resource = new Resource('post', 1);
     $document = new Document();
     $document->setData($resource);
     $this->assertEquals(['data' => $resource->toArray()], $document->toArray());
 }