How to use the powerbi-models.validateSettings function in powerbi-models

validateFilter(filter: models.IFilter): Promise;
  // Other
  print(): Promise;
  refreshData(): Promise;
  exportData(): Promise;
}

export const mockAppSpyObj = {
  // Load
  dashboardLoad: jasmine.createSpy("dashboardLoad").and.returnValue(Promise.resolve(null)),
  validateDashboardLoad: jasmine.createSpy("validateDashboardLoad").and.callFake(models.validateDashboardLoad),
  reportLoad: jasmine.createSpy("reportLoad").and.returnValue(Promise.resolve(null)),
  validateReportLoad: jasmine.createSpy("validateReportLoad").and.callFake(models.validateReportLoad),
  // Settings
  updateSettings: jasmine.createSpy("updateSettings").and.returnValue(Promise.resolve(null)),
  validateSettings: jasmine.createSpy("validateSettings").and.callFake(models.validateSettings),
  // Pages
  getPages: jasmine.createSpy("getPages").and.returnValue(Promise.resolve(null)),
  setPage: jasmine.createSpy("setPage").and.returnValue(Promise.resolve(null)),
  validatePage: jasmine.createSpy("validatePage").and.returnValue(Promise.resolve(null)),
  // Visuals
  getVisuals: jasmine.createSpy("getVisuals").and.returnValue(Promise.resolve(null)),
  validateVisual: jasmine.createSpy("validateVisual").and.returnValue(Promise.resolve(null)),
  // Filters
  getFilters: jasmine.createSpy("getFilters").and.returnValue(Promise.resolve(null)),
  setFilters: jasmine.createSpy("setFilters").and.returnValue(Promise.resolve(null)),
  validateFilter: jasmine.createSpy("validateFilter").and.callFake(models.validateFilter),
  // Other
  print: jasmine.createSpy("print").and.returnValue(Promise.resolve(null)),
  refreshData: jasmine.createSpy("refreshData").and.returnValue(Promise.resolve(null)),
  exportData: jasmine.createSpy("exportData").and.returnValue(Promise.resolve(null)),

switchMode(): Promise;
  save(): Promise;
  saveAs(saveAsParameters: models.ISaveAsParameters): Promise;
  setAccessToken(accessToken: string): Promise;
}

export const mockAppSpyObj = {
  // Load
  dashboardLoad: jasmine.createSpy("dashboardLoad").and.returnValue(Promise.resolve(null)),
  validateDashboardLoad: jasmine.createSpy("validateDashboardLoad").and.callFake(models.validateDashboardLoad),
  reportLoad: jasmine.createSpy("reportLoad").and.returnValue(Promise.resolve(null)),
  validateReportLoad: jasmine.createSpy("validateReportLoad").and.callFake(models.validateReportLoad),
  render: jasmine.createSpy("render").and.returnValue(Promise.resolve(null)),
  // Settings
  updateSettings: jasmine.createSpy("updateSettings").and.returnValue(Promise.resolve(null)),
  validateSettings: jasmine.createSpy("validateSettings").and.callFake(models.validateSettings),
  // Pages
  getPages: jasmine.createSpy("getPages").and.returnValue(Promise.resolve(null)),
  setPage: jasmine.createSpy("setPage").and.returnValue(Promise.resolve(null)),
  validatePage: jasmine.createSpy("validatePage").and.returnValue(Promise.resolve(null)),
  // Visuals
  validateVisual: jasmine.createSpy("validateVisual").and.returnValue(Promise.resolve(null)),
  // Filters
  getFilters: jasmine.createSpy("getFilters").and.returnValue(Promise.resolve(null)),
  setFilters: jasmine.createSpy("setFilters").and.returnValue(Promise.resolve(null)),
  validateFilter: jasmine.createSpy("validateFilter").and.callFake(models.validateFilter),
  // Other
  print: jasmine.createSpy("print").and.returnValue(Promise.resolve(null)),
  refreshData: jasmine.createSpy("refreshData").and.returnValue(Promise.resolve(null)),
  exportData: jasmine.createSpy("exportData").and.returnValue(Promise.resolve(null)),
  validateCreateReport: jasmine.createSpy("validateCreateReport").and.callFake(models.validateCreateReport),
  switchMode: jasmine.createSpy("switchMode").and.returnValue(Promise.resolve(null)),