MATLAB: Where do I find files for simulink tutorials

simulink

For example in https://www.mathworks.com/help/simulink/gs/navigate-model.html it refers to a smart_braking model. This model does not exist in my install.
open_system(fullfile(matlabroot,'help', 'toolbox', 'simulink', 'examples', 'smart_braking')) 'C:\Program Files\MATLAB\R2018a\help\toolbox\simulink\examples\smart_braking' is not a valid Simulink object name and no matching file found.

Best Answer

That web page is for R2018b document. What are you looking for? For Simulink tutorial in your version, type
web(fullfile(docroot, 'simulink/getting-started-with-simulink.html'))