docs: public String getRedirectUri(AccessTokenRequest request) {
  
  		String redirectUri = request.getFirst("redirect_uri");
  
  		if (redirectUri == null && request.getCurrentUri() != null && useCurrentUri) {
  			redirectUri = request.getCurrentUri();
  		}
  
  		if (redirectUri == null && getPreEstablishedRedirectUri() != null) {
  			// Override the redirect_uri if it is pre-registered
  			redirectUri = getPreEstablishedRedirectUri();
  		}
  
  		return redirectUri;
  
  	}