Add FC in ResourceIdentifier

src/V1/ResourceIdentifier.php

@@ -47,11 +47,12 @@ protected function parse(mixed $object): void
             throw new ValidationException('A resource id MUST be a string');
         }
 
-        $this->set('type', $object->type);
-        $this->set('id', $object->id);
-
-        if (property_exists($object, 'meta')) {
-            $this->set('meta', $this->create('Meta', $object->meta));
+        foreach (get_object_vars($object) as $key => $value) {
+            if ($key === 'meta') {
+                $this->set('meta', $this->create('Meta', $value));
+            } else {
+                $this->set($key, $value);
+            }
         }
     }
 

tests/Unit/V1/ResourceIdentifierTest.php

@@ -60,16 +60,21 @@ public function testCreateWithObjectAndMeta(): void
         $object->type = 'types';
         $object->id = '159';
         $object->meta = new \stdClass();
+        $object->fc = 'test property for forward compatability';
 
         $identifier = new ResourceIdentifier($object, $this->manager, $this->parent);
 
         $this->assertInstanceOf(ResourceIdentifier::class, $identifier);
 
-        $this->assertSame($identifier->get('type'), 'types');
-        $this->assertSame($identifier->get('id'), '159');
+        $this->assertSame(['type', 'id', 'meta', 'fc'], $identifier->getKeys());
+        $this->assertTrue($identifier->has('type'));
+        $this->assertSame('types', $identifier->get('type'));
+        $this->assertTrue($identifier->has('id'));
+        $this->assertSame('159', $identifier->get('id'));
         $this->assertTrue($identifier->has('meta'));
         $this->assertInstanceOf(Accessable::class, $identifier->get('meta'));
-        $this->assertSame($identifier->getKeys(), ['type', 'id', 'meta']);
+        $this->assertTrue($identifier->has('fc'));
+        $this->assertSame('test property for forward compatability', $identifier->get('fc'));
     }
 
     /**