create a class for a state machine with states "on" and "off" and transition functions "switchon" and "switchoff" in matlab

main.m
classdef StateMachine
    properties
        currentState
    end
    
    methods
        function obj = StateMachine(initialState)
            obj.currentState = initialState;
        end
        
        function switchon(obj)
            if strcmp(obj.currentState, 'off')
                obj.currentState = 'on';
            else
                error('The state machine is already on!');
            end
        end
        
        function switchoff(obj)
            if strcmp(obj.currentState, 'on')
                obj.currentState = 'off';
            else
                error('The state machine is already off!');
            end
        end
    end
end
668 chars
28 lines