Put the file ".phpstorm.meta.php" into root of your repository. Content of file .phpstorm.meta.php:
<?php
namespace PHPSTORM_META {
override( \Container::get(0), map([]));
}
Where \Container::get - method for get some object, example:
\Container::get('My\Super')
or
\Container::get(My\Super::class)
and now you can use autocomplete of all class methods.