export interface AttachmentData
optionalstring description? :
The description of the attachment
optionalnumber duration? :
The duration of the attachment in seconds (for voice message attachments)
optionalstring name? :
The name of the attachment
optionalstring title? :
The title of the attachment
optionalstring waveform? :
The base64 encoded byte array representing a sampled waveform (for voice message attachments)