### Question:
WalletTxn { public WalletTxn id(Integer id) { this.id = id; return this; }  WalletTxn amount(Integer amount); @ApiModelProperty(example = "5000", required = true, value = "取引金額") Integer getAmount(); void setAmount(Integer amount); WalletTxn balance(Integer balance); @ApiModelProperty(example = "10000", required = true, value = "残高(銀行口座等)") Integer getBalance(); void setBalance(Integer balance); WalletTxn companyId(Integer companyId); @ApiModelProperty(example = "1", required = true, value = "事業所ID") Integer getCompanyId(); void setCompanyId(Integer companyId); WalletTxn date(String date); @ApiModelProperty(example = "2018-01-01", required = true, value = "取引日(yyyy-mm-dd)") String getDate(); void setDate(String date); WalletTxn description(String description); @ApiModelProperty(example = "振込 カ）ABC", required = true, value = "取引内容") String getDescription(); void setDescription(String description); WalletTxn dueAmount(Integer dueAmount); @ApiModelProperty(example = "0", required = true, value = "未決済金額") Integer getDueAmount(); void setDueAmount(Integer dueAmount); WalletTxn entrySide(EntrySideEnum entrySide); @ApiModelProperty(example = "income", required = true, value = "入金／出金 (入金: income, 出金: expense)") EntrySideEnum getEntrySide(); void setEntrySide(EntrySideEnum entrySide); WalletTxn id(Integer id); @ApiModelProperty(example = "1", required = true, value = "明細ID") Integer getId(); void setId(Integer id); WalletTxn status(Integer status); @ApiModelProperty(required = true, value = "明細のステータス（消込待ち: 1, 消込済み: 2, 無視: 3, 消込中: 4）") Integer getStatus(); void setStatus(Integer status); WalletTxn walletableId(Integer walletableId); @ApiModelProperty(example = "1", required = true, value = "口座ID") Integer getWalletableId(); void setWalletableId(Integer walletableId); WalletTxn walletableType(WalletableTypeEnum walletableType); @ApiModelProperty(example = "bank_account", required = true, value = "口座区分 (銀行口座: bank_account, クレジットカード: credit_card, 現金: wallet)") WalletableTypeEnum getWalletableType(); void setWalletableType(WalletableTypeEnum walletableType); @Override boolean equals(java.lang.Object o); @Override int hashCode(); @Override String toString(); static final String SERIALIZED_NAME_AMOUNT; static final String SERIALIZED_NAME_BALANCE; static final String SERIALIZED_NAME_COMPANY_ID; static final String SERIALIZED_NAME_DATE; static final String SERIALIZED_NAME_DESCRIPTION; static final String SERIALIZED_NAME_DUE_AMOUNT; static final String SERIALIZED_NAME_ENTRY_SIDE; static final String SERIALIZED_NAME_ID; static final String SERIALIZED_NAME_STATUS; static final String SERIALIZED_NAME_WALLETABLE_ID; static final String SERIALIZED_NAME_WALLETABLE_TYPE; }### Answer:
@Test public void idTest() { }