Private method wrongly marked as "unused" when called from sibling

[kingcrunch]

<?php
class Foo
{
    public static function staticMethod($bar)
    {
        $x = new self;

        return $x->privateMethod($bar);
    }

    private function privateMethod($bar)
    {
        return $bar;
    }
}

$a = new Foo;
echo $a->staticMethod('Hello world');

See http://3v4l.org/G9sVq

phpmd markes the method privateMethod() as "unused".

[yoosefi]

Try tagging the static method with @uses self::privateMethod()

[manuelpichler]

I would expect this may work in a far far away future, because we don't have data flow analysis implemented.

[chriscalip]

Error sighted; on my case Avoid unused private fields such as but class has traits with methods that makes used of said fields.