Hi there,

Please help with this class where I am getting an error upon saving the test class below:
 

@isTest
public class APTS_ResendCreditMemoEmailTest{
    static testMethod  void creditMemoDocumentGenerationTest(){

        Profile profileSO = [SELECT Id FROM Profile WHERE Name = 'Standard User' LIMIT 1];
        
        User userSO = APTS_TestDataFactory.getUser('LastName123','medidate', profileSO.ID);
        insert userSO;
        System.runAs(userSO){
            EmailTemplate emailTemplateSO1 = APTS_TestDataFactory.getEmailTemplate('APTS Non Japan Invoice','APTS_Non_Japan_Invoice', userSO.ID);
            List<EmailTemplate> listEmailTemplate = new List<EmailTemplate>();
            listEmailTemplate.add(emailTemplateSO1);
            insert emailTemplateSO1;
        }

        insert APTS_TestDataFactory.getTaxConnectorConfigSetting();

        //Create & Insert Core Currency
        appirio_core__Currency__c coreCurrencyUSD = APTS_TestDataFactory.getCoreCurrency('U.S. Dollar','USD', TRUE);
        LIst<appirio_core__Currency__c> coreCurrencylist = new List<appirio_core__Currency__c>();
        coreCurrencylist.add(coreCurrencyUSD);
        insert coreCurrencylist;
        
        APTS_Legal_Entity__c legalEntitySO= APTS_TestDataFactory.getLegalEntity('Japan', coreCurrencyUSD.ID, FALSE);
        legalEntitySO.APTS_LE_Company_Code__c = 'ABC';
        legalEntitySO.APTS_LE_Country__c  = 'DEF';
        insert legalEntitySO;

        Apttus_Config2__PaymentTerm__c paymentTermSO = APTS_TestDataFactory.createPaymentTerm('Net 120', 'Net 120 Days', 120 , TRUE);
        insert paymentTermSO;

        APTS_Invoice_Number_Settings__c invoiceNumberSettingSO = APTS_TestDataFactory.getInvoiceNumberSetting(legalEntitySO.ID);
        insert invoiceNumberSettingSO;

        //Create & Insert Account
        Account accSO = APTS_TestDataFactory.getAccount('Test Account');
        accSO.APTS_Global_MSA__c = TRUE;
        insert accSO;
        
        Contact contactSO1 = APTS_TestDataFactory.getContact(accSO.ID, 'Japan', 'Last1', 'Japan');
        Contact contactSO2 = APTS_TestDataFactory.getContact(accSO.ID, 'Esker', 'Last2', 'Japan');
        List<Contact> listContact = new List<Contact>();
        listContact.add(contactSO1);
        listContact.add(contactSO2);
        insert listContact;

        Apttus_Config2__AccountLocation__c accountLocationSO1 = APTS_TestDataFactory.getAccountLocation('USA Account Location', accSO.ID, 'USA');
        accountLocationSO1.Apttus_Config2__DefaultInvoiceTemplate__c = 'APTS Non Japan Invoice';
        Apttus_Config2__AccountLocation__c accountLocationSO2 = APTS_TestDataFactory.getAccountLocation('USA Account Location', accSO.ID, 'USA');
        List<Apttus_Config2__AccountLocation__c> accountLocationList = new List<Apttus_Config2__AccountLocation__c>();
        accountLocationList.add(accountLocationSO1);
        accountLocationList.add(accountLocationSO2);
        insert accountLocationList;

        Opportunity oppSO1 = APTS_TestDataFactory.getOppty(accSO.ID, 'USA Opp');
        Opportunity oppSO2 = APTS_TestDataFactory.getOppty(accSO.ID, 'USA Opp');
        List<Opportunity> oppList = new List<Opportunity>();
        oppList.add(oppSO1);
        oppList.add(oppSO2);
        insert oppList;

        Apttus_Config2__Order__c orderSo = APTS_TestDataFactory.getOrder(accSO.Id, oppSO1.ID, accountLocationSO1.ID);
        orderSo.Apttus_Config2__PaymentTermId__c = paymentTermSO.ID;
        orderSo.APTS_Invoice_Delivery_Method_Email__c = true;
        orderSo.APTS_Invoice_Delivery_Method_Print__c = true;
        insert orderSo;

        Apttus_Billing__Invoice__c invoiceSO1 = APTS_TestDataFactory.getInvoice(accSO.ID, paymentTermSO.ID);
        invoiceSO1.APTS_Legal_Entity__c = legalEntitySO.ID;
        invoiceSO1.Apttus_Billing__LocationId__c = accountLocationSO1.ID;
        invoiceSO1.APTS_Order__c = orderSo.ID;
        
        Apttus_Billing__Invoice__c invoiceSO2 = APTS_TestDataFactory.getInvoice(accSO.ID, paymentTermSO.ID);
        invoiceSO2.APTS_Legal_Entity__c = legalEntitySO.ID;
        invoiceSO2.Apttus_Billing__LocationId__c = accountLocationSO2.ID;
        invoiceSO2.APTS_Order__c = orderSo.ID;

        List<Apttus_Billing__Invoice__c> invoiceList = new List<Apttus_Billing__Invoice__c>();
        invoiceList.add(invoiceSO1);
        invoiceList.add(invoiceSO2);
        insert invoiceList;

        Apttus_Billing__CreditMemo__c creditMemoSO = APTS_TestDataFactory.getCreditMemmo(accSO.ID, invoiceSO1.ID);
        creditMemoSO.APTS_Legal_Entity__c = legalEntitySO.ID;
        creditMemoSO.Apttus_Billing__LocationId__c = accountLocationSO1.ID;
        creditMemoSO.APTS_Shipping_Location__c = accountLocationSO1.ID;
        //creditMemoSO.Apttus_Billing__Status__c = 'Approved';
        creditMemoSO.Apttus_Billing__DeliveryStatus__c = 'Pending';
        creditMemoSO.APTS_Order__c = orderSo.ID;

        List<Apttus_Billing__CreditMemo__c>creditMemolist = new List<Apttus_Billing__CreditMemo__c>();
        creditMemolist.add(creditMemoSO);
        insert creditMemolist;
        
        Attachment attachmentSO = APTS_TestDataFactory.getAttachment(creditMemoSO.ID,'CreditMemo Attachment');
        List<Attachment> listAttachment = new List<Attachment>();
        listAttachment.add(attachmentSO);
        insert listAttachment;


        Apttus_Billing__RelatedARTransaction2__c relatedARTransactionSO = APTS_TestDataFactory.getRelatedARTransaction(invoiceSO1.ID);
        relatedARTransactionSO.Apttus_Billing__TxnType__c = 'Refund';
        relatedARTransactionSO.Apttus_Billing__DestinationCreditMemoId__c = creditMemoSO.ID;
        insert relatedARTransactionSO;
        
        Test.startTest();
        Test.setCurrentPageReference(new PageReference('Page.myPage'));
        System.currentPageReference().getParameters().put('creditMemoID', creditMemoSO.ID);
        System.currentPageReference().getParameters().put('status', 'Approved');

        APTS_ResendCreditMemoEmail resendCreditMemoEmail = new APTS_ResendCreditMemoEmail();
        resendCreditMemoEmail.resendEmail();
        
        Test.stopTest();

    }
}

The error is:

Error: Compile Error: Method does not exist or incorrect signature: void getOrder(Id, Id, Id) from the type APTS_TestDataFactory at line 62

Any guidance would be most appreciated. Thank you!