ArgumentListExpression args = (ArgumentListExpression) call.getArguments();
            VariableExpression arg = (VariableExpression) args.getExpression(index);
            if (!isDynamicVar(arg)) {
                return;
            }

            // Matches: task args?, <identifier>, args? or task(args?, <identifier>, args?)
            // Map to: task(args?, '<identifier>', args?)