### Question:
DealUpdateParams { public DealUpdateParams partnerCode(String partnerCode) { this.partnerCode = partnerCode; return this; }  DealUpdateParams companyId(Integer companyId); @ApiModelProperty(example = "1", required = true, value = "事業所ID") Integer getCompanyId(); void setCompanyId(Integer companyId); DealUpdateParams details(List<DealUpdateParamsDetails> details); DealUpdateParams addDetailsItem(DealUpdateParamsDetails detailsItem); @ApiModelProperty(required = true, value = "") List<DealUpdateParamsDetails> getDetails(); void setDetails(List<DealUpdateParamsDetails> details); DealUpdateParams dueDate(String dueDate); @javax.annotation.Nullable @ApiModelProperty(example = "2018-12-31", value = "支払期日(yyyy-mm-dd)") String getDueDate(); void setDueDate(String dueDate); DealUpdateParams issueDate(String issueDate); @ApiModelProperty(example = "2013-01-01", required = true, value = "発生日 (yyyy-mm-dd)") String getIssueDate(); void setIssueDate(String issueDate); DealUpdateParams partnerCode(String partnerCode); @javax.annotation.Nullable @ApiModelProperty(example = "code001", value = "取引先コード") String getPartnerCode(); void setPartnerCode(String partnerCode); DealUpdateParams partnerId(Integer partnerId); @javax.annotation.Nullable @ApiModelProperty(example = "1", value = "取引先ID") Integer getPartnerId(); void setPartnerId(Integer partnerId); DealUpdateParams receiptIds(List<Integer> receiptIds); DealUpdateParams addReceiptIdsItem(Integer receiptIdsItem); @javax.annotation.Nullable @ApiModelProperty(value = "証憑ファイルID（配列）") List<Integer> getReceiptIds(); void setReceiptIds(List<Integer> receiptIds); DealUpdateParams refNumber(String refNumber); @javax.annotation.Nullable @ApiModelProperty(example = "1", value = "管理番号") String getRefNumber(); void setRefNumber(String refNumber); DealUpdateParams type(TypeEnum type); @ApiModelProperty(example = "income", required = true, value = "収支区分 (収入: income, 支出: expense)") TypeEnum getType(); void setType(TypeEnum type); @Override boolean equals(java.lang.Object o); @Override int hashCode(); @Override String toString(); static final String SERIALIZED_NAME_COMPANY_ID; static final String SERIALIZED_NAME_DETAILS; static final String SERIALIZED_NAME_DUE_DATE; static final String SERIALIZED_NAME_ISSUE_DATE; static final String SERIALIZED_NAME_PARTNER_CODE; static final String SERIALIZED_NAME_PARTNER_ID; static final String SERIALIZED_NAME_RECEIPT_IDS; static final String SERIALIZED_NAME_REF_NUMBER; static final String SERIALIZED_NAME_TYPE; }### Answer:
@Test public void partnerCodeTest() { }