docs: fix PHPDoc types

Author: kenjis

system/Entity/Entity.php

@@ -25,6 +25,7 @@
 use CodeIgniter\Entity\Cast\URICast;
 use CodeIgniter\Entity\Exceptions\CastException;
 use CodeIgniter\I18n\Time;
+use DateTime;
 use Exception;
 use JsonSerializable;
 use ReturnTypeWillChange;
@@ -331,11 +332,11 @@ protected function mapProperty(string $key)
      * Converts the given string|timestamp|DateTime|Time instance
      * into the "CodeIgniter\I18n\Time" object.
      *
-     * @param mixed $value
+     * @param DateTime|float|int|string|Time $value
      *
      * @throws Exception
      *
-     * @return mixed|Time
+     * @return Time
      */
     protected function mutateDate($value)
     {
@@ -347,13 +348,13 @@ protected function mutateDate($value)
      * Add ? at the beginning of $type  (i.e. ?string) to get NULL
      * instead of casting $value if $value === null
      *
-     * @param mixed  $value     Attribute value
-     * @param string $attribute Attribute name
-     * @param string $method    Allowed to "get" and "set"
+     * @param bool|float|int|string|null $value     Attribute value
+     * @param string                     $attribute Attribute name
+     * @param string                     $method    Allowed to "get" and "set"
      *
      * @throws CastException
      *
-     * @return mixed
+     * @return array|bool|float|int|object|string|null
      */
     protected function castAs($value, string $attribute, string $method = 'get')
     {
@@ -447,7 +448,7 @@ public function cast(?bool $cast = null)
      *  $this->my_property = $p;
      *  $this->setMyProperty() = $p;
      *
-     * @param mixed|null $value
+     * @param array|bool|float|int|object|string|null $value
      *
      * @throws Exception
      *
@@ -495,7 +496,7 @@ public function __set(string $key, $value = null)
      * @throws Exception
      * @params string $key class property
      *
-     * @return mixed
+     * @return array|bool|float|int|object|string|null
      */
     public function __get(string $key)
     {
@@ -532,7 +533,7 @@ public function __get(string $key)
     /**
      * Get cast value from the data array.
      *
-     * @return mixed|null
+     * @return array|bool|float|int|object|string|null
      */
     private function _getCastData(string $key, array $data)
     {