Delphi XE2: How to define custom DataSnap REST URI?

I am using Delphi XE2 to write DataSnap REST service. I notice that the REST URI in DataSnap must strictly follow this format (refer here):

http://my.site.com/datasnap/rest/URIClassName/URIMethodName[/inputParameter]*

A famous example is sample method create by DataSnap server wizard:

http://my.site.com/datasnap/rest/TServerMethods1/ReverseString/ABC

There are 2 common ways to supply parameters in URI:

1. Path Segment parameter: /TServerMethods1/ReverseString/ABC
2. Query String parameter: /TServerMethods1/customers?name=bill

The Path Segment parameter URI is definitely supported by DataSnap REST. Is Query string parameters URI support in DataSnap REST too?

I have the following REST URI example and found it seems impossible to make it work with current DataSnap REST library:

1. /customers/A1234

   return customer object of ID A1234

2. /customers/A1234.xml

   return customer object of ID A1234 in XML format

3. /customers/A1234.json

   return customer object of ID A1234 in json format

4. /customers/A1234.html

   return customer object of ID A1234 in html format

5. /customers?name=Bill

   return a list of customer whose name contain Bill