[BCB] Remove TypeUtils::getDirectClassNames()

Author: ondrejmirtes

UPGRADING.md

@@ -256,3 +256,4 @@ Instead of `PHPStanTestCase::createBroker()`, call `PHPStanTestCase::createRefle
 * Remove `TypeUtils::getConstantStrings()`, use [`Type::getConstantStrings()`](https://apiref.phpstan.org/2.0.x/PHPStan.Type.Type.html#_getConstantStrings) instead
 * Remove `TypeUtils::getConstantTypes()` and `getAnyConstantTypes()`, use [`Type::isConstantValue()`](https://apiref.phpstan.org/2.0.x/PHPStan.Type.Type.html#_isConstantValue) or [`Type::generalize()`](https://apiref.phpstan.org/2.0.x/PHPStan.Type.Type.html#_generalize)
 * Remove `TypeUtils::generalizeType()`, use [`Type::generalize()`](https://apiref.phpstan.org/2.0.x/PHPStan.Type.Type.html#_generalize) instead
+* Remove `TypeUtils::getDirectClassNames()`, use [`Type::getObjectClassNames()`](https://apiref.phpstan.org/2.0.x/PHPStan.Type.Type.html#_getObjectClassNames) instead.

src/Type/TypeUtils.php

@@ -11,8 +11,6 @@
 use PHPStan\Type\Generic\TemplateType;
 use PHPStan\Type\Generic\TemplateUnionType;
 use function array_merge;
-use function array_unique;
-use function array_values;
 
 /**
  * @api
@@ -28,31 +26,6 @@ public static function getConstantIntegers(Type $type): array
 		return self::map(ConstantIntegerType::class, $type, false);
 	}
 
-	/**
-	 * @return list<string>
-	 *
-	 * @deprecated Use Type::getObjectClassNames() instead.
-	 */
-	public static function getDirectClassNames(Type $type): array
-	{
-		if ($type instanceof TypeWithClassName) {
-			return [$type->getClassName()];
-		}
-
-		if ($type instanceof UnionType || $type instanceof IntersectionType) {
-			$classNames = [];
-			foreach ($type->getTypes() as $innerType) {
-				foreach (self::getDirectClassNames($innerType) as $n) {
-					$classNames[] = $n;
-				}
-			}
-
-			return array_values(array_unique($classNames));
-		}
-
-		return [];
-	}
-
 	/**
 	 * @return IntegerRangeType[]
 	 */