Fail on method calls to deprecated classes

[gms8994]

If a class is deprecated, I would expect that any calls to methods in that deprecated class should also trigger a deprecation message.

For example, a change that I implemented locally in CallToDeprecatedMethodRule:

if ($classReflection->isDeprecated()) {
    $description = $methodReflection->getDeprecatedDescription();
    if ($description === null) {
        return [sprintf(
            'Call to method %s() of deprecated class %s.',
            $methodReflection->getName(),
            $methodReflection->getDeclaringClass()->getName()
        )];
    }

    return [sprintf(
        "Call to method %s() of deprecated class %s:\n%s",
        $methodReflection->getName(),
        $methodReflection->getDeclaringClass()->getName(),
        $description
    )];
}

Though maybe this makes more sense as a separate rule within this library, it works well enough for my needs.