Matthias\SymfonyServiceDefinitionValidator\ConstructorResolver::resolveFactoryServiceDefinitionWithMethod PHP Method

    private function resolveFactoryServiceDefinitionWithMethod(Definition $factoryDefinition, $factoryMethod)
    {
        $factoryClass = $this->resultingClassResolver->resolve($factoryDefinition);
        if (!method_exists($factoryClass, $factoryMethod)) {
            throw new MethodNotFoundException($factoryClass, $factoryMethod);
        }
        return new \ReflectionMethod($factoryClass, $factoryMethod);
    }