Considering this Api-Platform ApiResource declaration in attribute form:

#[ApiResource(
    operations: [
        new Post(
            controller: SomeController::class
            inputFormats: ['multipart' => ['multipart/form-data'], 'urlencoded' => ['application/x-www-form-urlencoded'],
)]
class MediaObject
{
   // implementation
}

how can the same configuration be performed in XML format?

I got as far as this:

<operation class="ApiPlatformMetadataPost"
                       controller="AppSomeController">
    <inputFormats>
        <format name="multipart">multipart/form-data</format>
    </inputFormats>
</operation>

I need this endpoint to accept both multipart and www-form-url-encoded.