@type t() :: %Nadia.Model.Chat{
  business_intro: BusinessIntro.t(),
  business_location: BusinessLocation.t(),
  business_opening_hours: BusinessOpeningHours.t(),
  first_name: binary(),
  id: integer(),
  last_name: binary(),
  photo: Nadia.Model.ChatPhoto.t(),
  title: binary(),
  type: binary(),
  username: binary()
}