Is there a way to post a message with a code snippet? - microsoft-graph-api

Question

The new way to upload images as hosted content through the Send Message endpoint is great! However, is there a way to upload text/plain as hosted content in order to post a Code Snippet Card in a message?
I have tried uploading text but the response gives me an error that says that the only content types allowed are 'image/jpg,image/jpeg,image/png'.
Example request:
{
"body": {
"contentType": "html",
"content": "<attachment id=\"4d92eb51ab9c48ebb5b364794a2fa569\"></attachment>"
},
"attachments": [
{
"id": "4d92eb51ab9c48ebb5b364794a2fa569",
"contentType": "application/vnd.microsoft.card.codesnippet",
"contentUrl": null,
"content": "{\"name\":\"\",\"language\":\"CSharp\",\"lines\":1,\"wrap\":false,\"codeSnippetUrl\":\"../hostedContents/1/$value\"}",
"name": null,
"thumbnailUrl": null
}
],
"hostedContents":[
{
"#microsoft.graph.temporaryId": "1",
"contentBytes": "VGVzdA==",
"contentType": "text/plain"
}
]
}
Response:
{
"error": {
"code": "BadRequest",
"message": "Unsupported content type in hostedContent with Id '1'. Allowed values are 'image/jpg,image/jpeg,image/png'",
"innerError": {
"date": "2020-10-07T12:17:15",
"request-id": "ed24f5df-3e1f-4871-b430-e4c1c9f30348",
"client-request-id": "ed24f5df-3e1f-4871-b430-e4c1c9f30348"
}
}
}

Answer 1

I received an answer in the Documentation GitHub: https://github.com/microsoftgraph/microsoft-graph-docs/issues/10210#issuecomment-705050649
Code snippets are not supported at the moment. They are on list of things to support, but there is no timeline to share yet.