Nested non-api resources are not displayed in api-doc

[eradionov]

Hi guys, have the following questions
I have resource with custom json field type

Seems that api-platform does not render MessageWithTemplate and AudioMessage on api-documentation page
even if I try to decorate openapi documentation, nested objects are not displaying in documentation.
Is it possible to render nested DTOs that are not part of api-platform resources with reference to schema component, like it's mentioned in openapi documentation with $ref?

...
#[Column(name: 'content', type: 'content', nullable: false)]
    #[ApiProperty(
        readableLink: true,
        writableLink: true,
        openapiContext: [
            'type' => 'array',
            'items' => [
                'type' => 'object',
                'oneOf' => [
                    ['$ref' => '#/components/schemas/MessageWithTemplate'],
                    ['$ref' => '#/components/schemas/AudioMessage'],
                ],
            ],
        ]
    )]
    #[Assert\NotNull]
    #[Assert\Type([
        MessageWithTemplate::class,
        AudioMessage::class,
    ])]
    #[MessageContentConstraint]
    #[Groups([
        ContextGroup::GROUP_ITEM_VIEW,
        ContextGroup::GROUP_LIST_VIEW,
        MessageContextGroup::GROUP_MESSAGE_CREATE,
        MessageContextGroup::GROUP_MESSAGE_UPDATE,
    ])]
    private MessageWithTemplate|AudioMessage $content;

    public function getContent(): MessageWithTemplate|AudioMessage
    {
        return $this->content;
    }

    public function setContent(MessageWithTemplate|AudioMessage $content): self
    {
        $this->content = $content;

        return $this;
    }
}
...
class MessageOpenApi implements OpenApiFactoryInterface
{
    public function __construct(
        private OpenApiFactoryInterface $decorated,
        #[Autowire(service: 'api_platform.json_schema.schema_factory')] private readonly SchemaFactoryInterface $schemaFactory,
    ) {
    }

    public function __invoke(array $context = []): OpenApi
    {
        $openApi = ($this->decorated)($context);

       $messageWithTemplateSchema = $this->schemaFactory->buildSchema(MessageWithTemplate::class);

        $audioMessageSchema = $this->schemaFactory->buildSchema(AudioMessage::class);

        $schemas['AudioMessage'] = $audioMessageSchema->getDefinitions()
            ->offsetGet($audioMessageSchema->getRootDefinitionKey() ?? 'AudioMessage');

        $schemas['MessageWithTemplate'] = $messageWithTemplateSchema->getDefinitions()
            ->offsetGet($messageWithTemplateSchema->getRootDefinitionKey() ?? 'MessageWithTemplate');

        return $openApi;
    }
}