$x = new class
        {
            private ArrayCollection $__loaders;

            public function __setLoaders(ArrayCollection $loaders)
            {
                $this->__loaders = $loaders;
            }

            public function __call($name, $arguments)
            {
                if ($this->__loaders && ($loader = $this->__loaders->get($name)) !== null) {
                    return $loader->load();
                }

                throw new \BadMethodCallException(static::class . '->' . $name . '() method not found');
            }

            public function __get(string $name)
            {
                if ($this->__loaders && $this->__loaders->get($name) !== null) {
                    return $this->__call($name, []);
                }

                if (strpos($name, 'get') !== 0) {
                    $name = 'get' . ucfirst($name);
                }

                return $this->__call($name, []);
            }
        };
        $x->__setLoaders(new ArrayCollection([
            'a' => new class {
                public function load()
                {
                    return 'a';
                }
            },
        ]));
        $x->a(); // works
        $this->serializer->serialize($x, 'json'); // error

            if (!$isPublic) {
                continue;
            }