RpcMethod addRpcMethod(String name, String argName, String argPackage,
            String retName, String retPackage)
    {
        return new RpcMethod(name, this, argName, argPackage, retName, retPackage);
    }
Represents a service defined in the proto (for generating rpc services).

@author David Yu
@created Jun 18, 2010
protostuff-parser/src/main/java/io/protostuff/parser/Service.java