How to get URL parameters in cakephp with URL that ends with xml?

I would like to pass URL parameters in cakephp with URL that ends with xml like below;

http://localhost/cp251/controller/api_get_info?page=1.xml

The controller function looks like this;

public function api_get_info()  {      if($this->RequestHandler->responseType() == 'xml')      {          //Problem is that the code never executes inside this if statement          //Controller action        }  }

The problem is that the code never executes inside the if statement if($this->RequestHandler->responseType() == 'xml'). However, if the URL becomes http://localhost/cp251/controller/api_get_info.xml, then the code will execute inside the if statement. Unfortunately, this is not what I want because the URL parameters cannot be sent.

How can I pass URL parameters in cakephp with URL that ends with xml? I am using cakephp 2.5.1

Thank you.

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