/**
* Perform the given <code>action</code> callback if the promise encounters an exception.
*
* @param action The action to perform.
* @param ec The ExecutionContext to execute the callback in.
*/
public void onFailure(final Callback<Throwable> action, ExecutionContext ec) {
FPromiseHelper.onFailure(this, action, ec);
}
/**
* Perform the given <code>action</code> callback if the promise encounters an exception.
*
* <p>This action will be run in the default exceution context.
*
* @param action The action to perform.
*/
public void onFailure(final Callback<Throwable> action) {
FPromiseHelper.onFailure(this, action, HttpExecution.defaultContext());
}