Fix: Add ReturnTypeWillChange attribute

Author: localheinz

src/Optimizely/Decide/OptimizelyDecision.php

@@ -81,6 +81,7 @@ public function getReasons()
         return $this->reasons;
     }
 
+    #[\ReturnTypeWillChange]
     public function jsonSerialize()
     {
         return get_object_vars($this);

src/Optimizely/OptimizelyConfig/OptimizelyAttribute.php

@@ -53,6 +53,7 @@ public function getKey()
     /**
      * @return string JSON representation of the object.
      */
+    #[\ReturnTypeWillChange]
     public function jsonSerialize()
     {
         return get_object_vars($this);

src/Optimizely/OptimizelyConfig/OptimizelyAudience.php

@@ -68,6 +68,7 @@ public function getConditions()
     /**
      * @return string JSON representation of the object.
      */
+    #[\ReturnTypeWillChange]
     public function jsonSerialize()
     {
         return get_object_vars($this);

src/Optimizely/OptimizelyConfig/OptimizelyConfig.php

@@ -166,6 +166,7 @@ public function getEvents()
     /**
      * @return string JSON representation of the object.
      */
+    #[\ReturnTypeWillChange]
     public function jsonSerialize()
     {
         return get_object_vars($this);

src/Optimizely/OptimizelyConfig/OptimizelyEvent.php

@@ -68,6 +68,7 @@ public function getExperimentIds()
     /**
      * @return string JSON representation of the object.
      */
+    #[\ReturnTypeWillChange]
     public function jsonSerialize()
     {
         return get_object_vars($this);

src/Optimizely/OptimizelyConfig/OptimizelyExperiment.php

@@ -83,6 +83,7 @@ public function getVariationsMap()
     /**
      * @return string JSON representation of the object.
      */
+    #[\ReturnTypeWillChange]
     public function jsonSerialize()
     {
         return get_object_vars($this);

src/Optimizely/OptimizelyConfig/OptimizelyFeature.php

@@ -118,6 +118,7 @@ public function getVariablesMap()
     /**
      * @return string JSON representation of the object.
      */
+    #[\ReturnTypeWillChange]
     public function jsonSerialize()
     {
         return get_object_vars($this);

src/Optimizely/OptimizelyConfig/OptimizelyVariable.php

@@ -82,6 +82,7 @@ public function getValue()
     /**
      * @return string JSON representation of the object.
      */
+    #[\ReturnTypeWillChange]
     public function jsonSerialize()
     {
         return get_object_vars($this);

src/Optimizely/OptimizelyConfig/OptimizelyVariation.php

@@ -84,6 +84,7 @@ public function getVariablesMap()
      * @return string JSON representation of the object.
      *                Unsets featureEnabled property for variations of ab experiments.
      */
+    #[\ReturnTypeWillChange]
     public function jsonSerialize()
     {
         $props = get_object_vars($this);