@type t() :: %LINE.Bot.Insight.Model.GetStatisticsPerUnitResponseMessage{
  impression: integer() | nil,
  mediaPlayed: integer() | nil,
  mediaPlayed100Percent: integer() | nil,
  mediaPlayed25Percent: integer() | nil,
  mediaPlayed50Percent: integer() | nil,
  mediaPlayed75Percent: integer() | nil,
  seq: integer(),
  uniqueImpression: integer() | nil,
  uniqueMediaPlayed: integer() | nil,
  uniqueMediaPlayed100Percent: integer() | nil,
  uniqueMediaPlayed25Percent: integer() | nil,
  uniqueMediaPlayed50Percent: integer() | nil,
  uniqueMediaPlayed75Percent: integer() | nil
}