Fix

ondrejmirtes · ondrejmirtes · commit 1236c177af2d · 2020-06-07T11:57:02.000+02:00
diff --git a/src/Rules/Methods/OverridingMethodRule.php b/src/Rules/Methods/OverridingMethodRule.php
@@ -352,7 +352,7 @@ private function isTypeCompatible(Type $methodParameterType, Type $prototypePara
 
 	/**
 	 * @param RuleError[] $errors
-	 * @return RuleError[]
+	 * @return (string|RuleError)[]
 	 */
 	private function addErrors(
 		array $errors,
