export interface AttachmentDataoptionaldescription? : string 
The description of the attachment
optionalduration? : number 
The duration of the attachment in seconds (for voice message attachments)
optionalname? : string 
The name of the attachment
optionaltitle? : string 
The title of the attachment
optionalwaveform? : string 
The base64 encoded byte array representing a sampled waveform (for voice message attachments)