There are four methods to be implemented on the AppealableCaseType interface. Two of the methods are used to defined business logic related to the Case Type:
boolean isContinueBenefitsEnabled(CaseID caseID);
This should return true if Continue Benefits functionality should be enabled for this instance of the Case Type.
AppealableCaseTypeDetailsList listAppealableCaseDetails();
This should list all of the case configurations for the abstract Case Type that can be configured for appeals.
The other two methods relate to the use of the wizard framework for appealing case objects:
String getCreateWizardProperties();
This should return the name of the wizard properties file.
ClientURI getCreateWizardURI(CaseID caseID);
This should return the initial screen in the wizard.