def acknowledge_paypal(options = {})
      response = JSON.parse(@client.patch("items/#{send(:id)}/acknowledge_paypal", options).body)
      @attributes = response['items']
      true
    end
def acknowledge_paypal(options = {})
      response = JSON.parse(@client.patch("items/#{send(:id)}/acknowledge_paypal", options).body)
      @attributes = response['items']
      true
    end
.

 @see http://docs.promisepay.com/v2.2/docs/itemsidacknowledge_paypal

 @return [Boolean]