def page(page_number)
      request = page_iterator.get_page(page_number)
      self.instance_eval { @env = request.env } if request
      request
    end
def page(page_number)
      request = page_iterator.get_page(page_number)
      self.instance_eval { @env = request.env } if request
      request
    end
Retrieves a specific result for a page given page number.
 The <tt>page_number</tt> parameter is not validate, hitting a page
 that does not exist will return Github API error. Consequently, if
 there is only one page, this method returns nil