can't add product to sylius-db from command - php

Question

protected function execute(InputInterface $input, OutputInterface $output)
{
$factory = $this->getContainer()->get('sylius.factory.product');
$manager = $this->getContainer()->get('sylius.manager.product');
$product = $factory->createNew();
$product
->setName('Foo')
->setDescription('Nice product');
$manager->persist($product);
$manager->flush(); // Save changes in database.
So I want to add a product from a command. But I'm always getting this Error:
PHP Fatal error: Call to a member function setDescription() on null in C:\Users\Coffee-Bike\IntelliJIDEAProjects\sylius-shop\acme\src\AppBundle\Command\Collmex\ImportProductsFromCollmexCommand.php on line 46
PHP Stack trace:
PHP 1. {main}() C:\Users\Coffee-Bike\IntelliJIDEAProjects\sylius-shop\acme\bin\console:0
PHP 2. Symfony\Component\Console\Application->run() C:\Users\Coffee-Bike\IntelliJIDEAProjects\sylius-shop\acme\bin\console:28
PHP 3. Symfony\Bundle\FrameworkBundle\Console\Application->doRun() C:\Users\Coffee-Bike\IntelliJIDEAProjects\sylius-shop\acme\vendor\symfony\symfony\src\Symfony\Component\Console\Application.php:130
PHP 4. Symfony\Component\Console\Application->doRun() C:\Users\Coffee-Bike\IntelliJIDEAProjects\sylius-shop\acme\vendor\symfony\symfony\src\Symfony\Bundle\FrameworkBundle\Console\Application.php:81
PHP 5. Symfony\Component\Console\Application->doRunCommand() C:\Users\Coffee-Bike\IntelliJIDEAProjects\sylius-shop\acme\vendor\symfony\symfony\src\Symfony\Component\Console\Application.php:223
PHP 6. Symfony\Component\Console\Command\Command->run() C:\Users\Coffee-Bike\IntelliJIDEAProjects\sylius-shop\acme\vendor\symfony\symfony\src\Symfony\Component\Console\Application.php:887
PHP 7. AppBundle\Command\Collmex\ImportProductsFromCollmexCommand->execute() C:\Users\Coffee-Bike\IntelliJIDEAProjects\sylius-shop\acme\vendor\symfony\symfony\src\Symfony\Component\Console\Command\Command.php:264
Fatal error: Call to a member function setDescription() on null in C:\Users\Coffee-Bike\IntelliJIDEAProjects\sylius-shop\acme\src\AppBundle\Command\Collmex\ImportProductsFromCollmexCommand.php on line 46
But I'm juts following this documentation here.
And this is the same procedure. What am I doing wrong?

Answer 1

Check the docs in The Book section here: http://docs.sylius.org/en/latest/book/products/products.html