docs: private InterfaceInfo allMethod(List<XsdElement> directElements, String className, int interfaceIndex, String apiName, String groupName){
          String interfaceName = groupName != null ? groupName : className;
          String interfaceFullName = firstToUpper(interfaceName + ALL_SUFFIX + interfaceIndex);
  
          if (createdInterfaces.containsKey(interfaceName)){
              return createdInterfaces.get(interfaceName);
          }
  
          return createAllInterface(interfaceFullName, directElements, interfaceIndex, apiName);
      }