minor #237 Updated the FlagBag templates. (laurentmuller)

This PR was merged into the 2.x-dev branch.

Discussion
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Updated the FlagBag templates.

This is the correction for issue #192.
It's seem that I never created a pull request for this.

Commits
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5673f43 Updated the FlagBag templates

src/FlagBag.php

@@ -76,17 +76,27 @@ private static function checkIntBackedEnumType(string|object $enumOrType): void
     }
 
     /**
-     * @param class-string<T> $enumType
+     * @template E of \BackedEnum
+     *
+     * @param class-string<E> $enumType
      *
-     * @return FlagBag<T>
+     * @return FlagBag<E>
      */
     public static function fromAll(string $enumType): FlagBag
     {
         return new FlagBag($enumType, static::getBitmask($enumType));
     }
 
     /**
+     * @psalm-template E of \BackedEnum
+     *
      * @param class-string<T>|T $enumOrType
+     *
+     * @psalm-param E ...$flags
+     *
+     * @phpstan-return FlagBag<T>
+     *
+     * @psalm-return FlagBag<E>
      */
     public static function from(string|\BackedEnum $enumOrType, \BackedEnum ...$flags): static
     {