code: public ServiceFuture<Void> beginStopEnvironmentAsync(String userName, String environmentId, final ServiceCallback<Void> serviceCallback) {
          return ServiceFuture.fromResponse(beginStopEnvironmentWithServiceResponseAsync(userName, environmentId), serviceCallback);
      }
docs: Stops an environment by stopping all resources inside the environment This operation can take a while to complete.
  
  @param userName The name of the user.
  @param environmentId The resourceId of the environment
  @param serviceCallback the async ServiceCallback to handle successful and failed responses.
  @throws IllegalArgumentException thrown if parameters fail the validation
  @return the {@link ServiceFuture} object