You are an expert in writing code in many different languages. Your goal is to perform code completion for the following code, keeping in mind the rest of the code and the file meta data.
    Metadata details:
    filename: RandomPath.m
    path of file: ./repos/Robotics-Toolbox/rvctools/release10.3.1/robot
    
    the code of the file until where you have to start completion: %RandomPath Vehicle driver class
%
% Create a "driver" object capable of steering a Vehicle subclass object through random 
% waypoints within a rectangular region and at constant speed.
%
% The driver object is connected to a Vehicle object by the latter's
% add_driver() method.  The driver's demand() method is invoked 
    
function [speed, steer] = demand(driver)
        %RandomPath.demand Compute speed and heading to waypoint
        %
        % [SPEED,STEER] = R.demand() is the speed and steer angle to
        % drive the vehicle toward the next waypoint.  When the vehicle is
        % within R.dtresh a new waypoint is chosen.
        %
        % See also Vehicle.
            if isempty(driver.goal)
                driver.setgoal();
            end