export interface IAudio {

  /**
   * Unique identifier for this file.
   */
  file_id: string,

  /**
   * Duration of the audio in seconds as defined by sender.
   */
  duration: number,

  /**
   * Performer of the audio as defined by sender or by audio tags.
   */
  performer?: string,

  /**
   * Title of the audio as defined by sender or by audio tags
   */
  title?: string,

  /**
   * MIME type of the file as defined by sender.
   */
  mime_type?: string,

  /**
   * File size
   */
  file_size?: number
}