Calling SEGW service from within ABAP Code

Hi,

I have registered an FM with SEGW and implemented methods in it.

My service is created now. Can I call this service from within an ABAP code?

I want to do this so as to use the Gateway functions and security. All I know to execute this is via SEGW. Need some standard FM or classes via which I can call this _SRV service of the gateway and get the response back in my code.

Thanks,

Ags