When using annotation based dependency injection on a property of a Trait (accessibility does not matter: private, protected, public), it seems no aliases can be used:

With the FQCN, it works

namespace Project\Traits;

trait MyTrait
{
  /**
   * @Inject
   * @var \Fully\Quallified\Class\Name
   */
  private $propertyName;
}

When using an alias, an error message is generated:

namespace Project\Traits;

use Fully\Quallified\Class\Name as AliasName

trait MyTrait
{
  /**
   * @Inject
   * @var AliasName
   */
  private $propertyName;
}

Error-message: The @var annotation on Class::propertyName contains a non existent class "AliasName". Did you maybe forget to add a "use" statement for this annotation?", which seem to origin here

I "guess" the parsing of use statements of the declaring class does not consider stuff that are defined in a trait?

https://github.com/PHP-DI/PhpDocReader/blob/21dce5e29f640d655e7b4583ecfb7d166127a5da/src/PhpDocReader/PhpDocReader.php#L102

I think not only the declaring class of the property should be considered, but also the traits that are used by that class with ReflectionClass.getTraits()