uploadAttachment method
Upload an attachment and get its token.
fileName: The original file namefilePath: Absolute path to the file on the devicemimeType: The MIME type of the file (e.g., "image/png")
Returns a ZendeskAttachment with the upload token.
Implementation
Future<ZendeskAttachment?> uploadAttachment({
required String fileName,
required String filePath,
required String mimeType,
}) {
throw UnimplementedError(
'uploadAttachment() has not been implemented.');
}