/**
* Creates a media and add it to given product instance
*
* @param string $mediaFilename A media filename
* @param string $name A media name to set on creation
* @param string $description A media description text
* @param ProductInterface $product A Product instance to add media
* @param string $author A media author text
* @param string $copyright A media copyright text
*/
protected function addMediaToProduct($mediaFilename, $name, $description, ProductInterface $product, $author = null, $copyright = null, $categoryReference = 'products_category')
{
$product->setImage($this->createMedia($mediaFilename, $name, $description, $author, $copyright, $categoryReference));
}