@type obis_t() ::
  {non_neg_integer(), non_neg_integer(), non_neg_integer(), non_neg_integer(),
   non_neg_integer()}

@type obj_t() :: {obis_t(), value_t() | [value_t()]}

@type t() :: %DSMR.Telegram{checksum: String.t(), data: [obj_t()], header: String.t()}

@type value_t() ::
  binary()
  | obis_t()
  | {:timestamp, NaiveDateTime.t(), binary()}
  | {:measurement, float() | Decimal.t(), binary()}