code: public Observable<WorkItemConfigurationInner> getDefaultAsync(String resourceGroupName, String resourceName) {
          return getDefaultWithServiceResponseAsync(resourceGroupName, resourceName).map(new Func1<ServiceResponse<WorkItemConfigurationInner>, WorkItemConfigurationInner>() {
              @Override
              public WorkItemConfigurationInner call(ServiceResponse<WorkItemConfigurationInner> response) {
                  return response.body();
              }
          });
      }
docs: Gets default work item configurations that exist for the application.
  
  @param resourceGroupName The name of the resource group.
  @param resourceName The name of the Application Insights component resource.
  @throws IllegalArgumentException thrown if parameters fail the validation
  @return the observable to the WorkItemConfigurationInner object