Tezos_raw_protocol_023_PtSeouLo.Deposits_reprType representing unstaked frozen deposits.
initial_amount is the amount on which slashing should be based. current_amount is the current amount after slashing has happened.
There is a record per cycle.
The initial_amount may be increased during the current cycle only, when an unstake is requested.
val encoding : t Tezos_protocol_environment_023_PtSeouLo.Data_encoding.tval zero : tval (+?) : 
  t ->
  Tez_repr.t ->
  t Tezos_protocol_environment_023_PtSeouLo.Error_monad.tzresultval (++?) : 
  t ->
  t ->
  t Tezos_protocol_environment_023_PtSeouLo.Error_monad.tzresult