code: public ServiceFuture<List<PersonGroup>> listAsync(ListPersonGroupsOptionalParameter listOptionalParameter, final ServiceCallback<List<PersonGroup>> serviceCallback) {
          return ServiceFuture.fromResponse(listWithServiceResponseAsync(listOptionalParameter), serviceCallback);
      }
docs: List person groups and their information.
  
  @param listOptionalParameter the object representing the optional parameters to be set before calling this API
  @param serviceCallback the async ServiceCallback to handle successful and failed responses.
  @throws IllegalArgumentException thrown if parameters fail the validation
  @return the {@link ServiceFuture} object