Class Service Locator: https://twitter.com/benjamincremer/status/851434756617142272

.ide-toolbox.metadata.json

{
  "registrar": [
    {
      "provider": "class",
      "language": "php",
      "signatures": [
        {
          "class": "FooClass",
          "method": "foo",
          "type": "type"
        }
      ]
    }
  ]
}

FooClass.php

<?php

class FooClass
{
    public function foo($foo)
    {
    }
}

(new FooClass())->foo(DateTime::class)->getTimestamp();

Work's like a charm. Thanks a lot!

• Install https://github.com/Haehnchen/idea-php-toolbox
• Add file .ide-toolbox.metadata.json

{
  "registrar": [
    {
      "provider": "class",
      "language": "php",
      "signatures": [
        {
          "class": "Zend\\ServiceManager\\ServiceLocatorInterface",
          "method": "get",
          "type": "type"
        }
      ]
    }
  ]
}

Enjoy return type autocompletion for your ServiceLocator

For future Reference.

This also works out-of-the-box without any plugins in PHPStorm when using the .phpstorm.meta.php file, see: https://confluence.jetbrains.com/display/PhpStorm/PhpStorm+Advanced+Metadata.

// file: .phpstorm.meta.php
namespace PHPSTORM_META
{
    use Interop\Container\ContainerInterface as InteropContainerInterface;

    override(InteropContainerInterface::get(0),
        map([
            '' => '@',
            'Application' => Zend\Mvc\ApplicationInterface::class,
            'HttpRouter' => Zend\Mvc\Router\Http\TreeRouteStack::class,
        ])
    );
}