The file name.
The file type.
The file URL.
The conversation type.
Message extension.
The file object.
The image file length.
The sender, which can only be the current user and can not be changed.
The image height.
The recipient.
The message type.
The file URL. If the file has been uploaded, you can directly use the URL.
The image width.
The callback of file upload completion.
The callback of file upload error.
The callback of file upload progress.
Generated using TypeDoc
The message body.