@type t() :: %Milvex.Milvus.Proto.Milvus.MutationResult{
  IDs: Milvex.Milvus.Proto.Schema.IDs.t() | nil,
  __unknown_fields__: [Protobuf.unknown_field()],
  acknowledged: boolean(),
  delete_cnt: integer(),
  err_index: [non_neg_integer()],
  insert_cnt: integer(),
  status: Milvex.Milvus.Proto.Common.Status.t() | nil,
  succ_index: [non_neg_integer()],
  timestamp: non_neg_integer(),
  upsert_cnt: integer()
}