BaseFormElement: Change param type hint

Since `ValidatorChain::addValidators($param)` requires $param of the type `Traversable<int|string, mixed>`, this class should reflect it.

Author: sukhwinder33445

src/FormElement/BaseFormElement.php

@@ -12,6 +12,7 @@
 use ipl\Stdlib\Messages;
 use ipl\Validator\ValidatorChain;
 use ReflectionProperty;
+use Traversable;
 
 abstract class BaseFormElement extends BaseHtmlElement implements FormElement, ValueCandidates
 {
@@ -184,7 +185,7 @@ public function getValidators()
     /**
      * Set the validators
      *
-     * @param iterable $validators
+     * @param Traversable<int|string, mixed> $validators
      *
      * @return $this
      */
@@ -201,7 +202,7 @@ public function setValidators($validators)
     /**
      * Add validators
      *
-     * @param iterable $validators
+     * @param Traversable<int|string, mixed> $validators
      *
      * @return $this
      */