MC-33069: Stabilize Unit tests

Author: DianaRusin

lib/internal/Magento/Framework/MessageQueue/Code/Generator/RemoteServiceGenerator.php

@@ -136,7 +136,7 @@ protected function _getClassMethods()
                 $parameterName = $methodParameter->getName();
                 $parameter = [
                     'name' => $parameterName,
-                    'type' => $methodParameter->getType(),
+                    'type' => $this->convertMethodType($methodParameter->getType()),
                 ];
                 if ($methodParameter->isDefaultValueAvailable()) {
                     $parameter['defaultValue'] = $methodParameter->getDefaultValue() !== null
@@ -155,7 +155,7 @@ protected function _getClassMethods()
             $annotations = [['name' => 'inheritdoc']];
             $method = [
                 'name' => $methodName,
-                'returnType' => $methodReflection->getReturnType(),
+                'returnType' => $this->convertMethodType($methodReflection->getReturnType()),
                 'parameters' => $methodParameters,
                 'body' => $methodBody,
                 'docblock' => ['tags' => $annotations],
@@ -165,6 +165,17 @@ protected function _getClassMethods()
         return $methods;
     }
 
+    /**
+     * Converts method type if needed.
+     *
+     * @param mixed $type
+     * @return string|null
+     */
+    private function convertMethodType($type)
+    {
+        return $type instanceof \ReflectionNamedType ? $type->getName() : $type;
+    }
+
     /**
      * @inheritDoc
      */