Use array of operations to support multiple definitions per method

Author: grimmdude

src/spec/PathItem.php

@@ -50,14 +50,14 @@ protected function attributes(): array
         return [
             'summary' => Type::STRING,
             'description' => Type::STRING,
-            'get' => Operation::class,
-            'put' => Operation::class,
-            'post' => Operation::class,
-            'delete' => Operation::class,
-            'options' => Operation::class,
-            'head' => Operation::class,
-            'patch' => Operation::class,
-            'trace' => Operation::class,
+            'get' => [Operation::class],
+            'put' => [Operation::class],
+            'post' => [Operation::class],
+            'delete' => [Operation::class],
+            'options' => [Operation::class],
+            'head' => [Operation::class],
+            'patch' => [Operation::class],
+            'trace' => [Operation::class],
             'servers' => [Server::class],
             'parameters' => [Parameter::class],
         ];