[T] DocToken

type DocToken:
  | Token.NewLine
  | Token.Whitespace
  | Token.ConflictMarker
  | Token.Star
  | Token.At
  | Token.CloseBrace
  | Token.Identifier
  | Token.Hyphen
  | Token.DocText
  | Token.DocCodeSpan
  | Token.DocCodeFenceDelimiter
  | Token.EndOfFile;