t() :: %Stellar.Horizon.Account.Balance{
  asset_code: String.t() | nil,
  asset_issuer: String.t() | nil,
  asset_type: String.t(),
  balance: non_neg_integer(),
  buying_liabilities: float(),
  is_authorized: boolean() | nil,
  is_authorized_to_maintain_liabilities: boolean() | nil,
  last_modified_ledger: non_neg_integer() | nil,
  limit: float() | nil,
  selling_liabilities: float()
}