[Axis2] invoke REST service with url params

[Ran]

Hi,
I have got REST working under http://localhost:8080/axis2/MyService/getEcho
getEcho is an operation of MyService.

How do I invoke getEcho with parameters to pass in input ? such as
http://localhost:8080/axis2/MyService/getEcho?part1=helloREST would call
getEcho with parameter part1 set to helloREST

Thanks,
ran