Is it possible to customize the OOB content fragment model datatypes(single line text for example) to render composite multifield? So that we can have more than 1 field inside multifield for content fragment authoring. I followed this article from git but that's not the complete solution.: https://github.com/AdobeDocs/experience-manager-64.en/blob/master/help/sites-developing/customizing-content-fragment-model-data-types.md Any help would be appreciated.