code: @Override
  	protected void updateEnvironment(final Environment env) {
  		// Check if update already applied (so not applied in render phase)
  		if (!environmentUpdated) {
  			environmentUpdated = true;
  			// Post path may have changed (if mapped with multiple URLs)
  			String postPath = getResponseUrl(backingRequest);
  			env.setPostPath(postPath);
  		}
  	}
docs: {@inheritDoc}