Gère correctement les attributs "input" et "output".

Notamment s'ils valent "false".

src/php/Metadata/MetadataFactory.php

@@ -253,35 +253,33 @@ final class MetadataFactory implements MetadataFactoryInterface
 
         $opDef = new OperationDef($name, $method, $type === OperationType::COLLECTION);
 
-        if ($opDef->hasNormalization()) {
-            $input = $getAttribute('input', $class->getFullName());
-            if (is_array($input) && isset($input['class'])) {
-                $input = $input['class'];
-            }
-            $normalization = $this->getOperationSerialization(
-                $opDef,
-                PHPClass::get($input),
-                true,
-                $getAttribute('normalization_context', [])['groups'] ?? []
-            );
-        } else {
-            $normalization = null;
+        $input = $getAttribute('input', null);
+        if ($input === null && $opDef->hasNormalization()) {
+            $input = $class->getFullName();
+        }
+        if (is_array($input) && isset($input['class'])) {
+            $input = $input['class'];
         }
+        $normalization = $input ? $this->getOperationSerialization(
+            $opDef,
+            PHPClass::get($input),
+            true,
+            $getAttribute('normalization_context', [])['groups'] ?? []
+        ) : null;
 
-        if ($opDef->hasDenormalization()) {
-            $output = $getAttribute('output', $class->getFullName());
-            if (is_array($output) && isset($output['class'])) {
-                $output = $output['class'];
-            }
-            $denormalization = $this->getOperationSerialization(
-                $opDef,
-                PHPClass::get($output),
-                false,
-                $getAttribute('denormalization_context', [])['groups'] ?? []
-            );
-        } else {
-            $denormalization = null;
+        $output = $getAttribute('output', null);
+        if ($input === null && $opDef->hasDenormalization()) {
+            $output = $class->getFullName();
         }
+        if (is_array($output) && isset($output['class'])) {
+            $output = $output['class'];
+        }
+        $denormalization = $output ? $this->getOperationSerialization(
+            $opDef,
+            PHPClass::get($output),
+            false,
+            $getAttribute('denormalization_context', [])['groups'] ?? []
+        ) : null;
 
         return new OperationMetadata(
             $opDef,