Assets
Manage assets in Beeper Desktop, like message attachments
Upload a file
$client->assets->upload(string file, ?string fileName, ?string mimeType): AssetUploadResponse
POST/v1/assets/upload
Upload a file (base64)
$client->assets->uploadBase64(string content, ?string fileName, ?string mimeType): AssetUploadBase64Response
POST/v1/assets/upload/base64