Confirm that the interface has been registered and obtain a reference to the server.
PRUint32 Init (nsISupports *aServer)=0;
The method has the following parameter:
On return, this location contains a reference to the server with which the module is registered.
NS_OK on success, non-zero error code on failure.
The server calls this method after finding and registering the interface on module load, to confirm that the operation was successful. You can use the pointer returned in aServer to make calls out to the server.