Covariant template not supported call-site

[pkly]

https://psalm.dev/r/766ceeaa45

PHPStan supports the following syntax https://phpstan.org/blog/whats-up-with-template-covariant#call-site-variance (and is very picky about you not using it), but Psalm produced an invalid PHPDoc error.

[psalm-github-bot]

I found these snippets:

https://psalm.dev/r/766ceeaa45

<?php

/**
  * @template T of object
  */
class Foo {
    public function do(): void {}
}

/**
  * @param Foo<covariant object> $f
  */
function bar(Foo $f): void {
    $f->do();
}

Psalm output (using commit ef3b018):

ERROR: UndefinedDocblockClass - 11:12 - Docblock-defined class, interface or enum named covariantobject does not exist