Function addNote

addNote(slug, text, isPublic, position): Promise<Viewer.Note | Viewer.Comment>
Adds a Note or a Comment for an item. (Comments are just public Notes.)
Parameters
- slug: string
- text: string
- isPublic: boolean
- position: number
  The page number for the Note (or 0 for a Note on a video)
Returns Promise<Viewer.Note | Viewer.Comment>