如何在 IDE 中输入提示上下文？

我在用Closure::call (http://php.net/manual/en/closure.call.php http://php.net/manual/en/closure.call.php) 在类上下文中调用外部闭包。

这是一个简单的重现：

class Foo {
    private $bar = 'baz';

    /**
     * Executes a closure in $this context and returns whatever the closure returns.
     *
     * @param \Closure $closure
     * @return mixed
     */
    public function callClosureInThisContext(\Closure $closure) {
        return $closure->call($this);
    }
}

class Closures {
    /**
     * @return \Closure
     */
    public function getClosureForFoo() : \Closure {
        return function () {
            // how do I tell my IDE that in this context $this is actually class Foo,
            // and not the class Closures?
            print $this->bar;
        };
    }
}

$foo = new Foo();
$closures = new Closures();
$foo->callClosureInThisContext($closures->getClosureForFoo()); // prints "baz"

This works as expected, but my IDE is of course, not happy, and is warning me about the "field bar not found":

我能否以某种方式告诉 IDE（在本例中为 PhpStorm）该闭包将在另一个类中使用并且它应该假定其上下文？

try

/** @var $this Foo */
print $this->bar;

除了 Closure 之外，它还会为 Foo 类添加自动完成功能