@type t() :: %ExStreamClient.Model.CallSession{
  accepted_by: %{optional(String.t()) => float()},
  active_sf_us: [ExStreamClient.Model.SFUIDLastSeen.t()],
  anonymous_participant_count: integer(),
  app_pk: integer(),
  call_id: String.t(),
  call_type: String.t(),
  created_at: float(),
  deleted_at: float() | nil,
  ended_at: float() | nil,
  live_ended_at: float() | nil,
  live_started_at: float() | nil,
  missed_by: %{optional(String.t()) => float()},
  participants: [ExStreamClient.Model.CallParticipant.t()],
  participants_count_by_role: %{optional(String.t()) => integer()},
  rejected_by: %{optional(String.t()) => float()},
  ring_at: float() | nil,
  session_id: String.t(),
  sfui_ds: [String.t()],
  started_at: float() | nil,
  timer_ends_at: float() | nil,
  user_permission_overrides: %{
    optional(String.t()) => %{optional(String.t()) => boolean()}
  }
}