@phpstan-pure-unless-callable-is-impure

The @phpstan-pure-unless-callable-is-impure tag is PHPStan's vendor-specific alias of @pure-unless-callable-is-impure, which this component already recognizes bare.

This library recognizes it as an alias: it parses identically to the canonical tag above and produces the exact same tag instance, keeping the vendor-prefixed name it was written with.

Like the bare spelling, this one is only weakly sourced — it traces back to a phpdoc-parser pull request rather than a PHPStan docs page.