Check if a referenced project is available.

EDIT : I submit before finishing the question.

EDIT2 : Now there is everything.

Hello,

I am working with Simulink Projects (object of the class 'matlab.project.Project' )on Matlab R2019b, and I don't have found an acceptable way to solve it.

The issue :

A Simulink project mainProject has two others Simulink project as references parentA and parentB, wih relative path from mainProject. It works well, no issue at this point.

All projects are closed.

I removed from parentB its current directory.

Now, when I tried to open the mainProject, I get an error on the pop-up winows.

The question :

Using command, how can I check the availability of referenced projects, using an acceptable method ?

What I have done :

I open the project with the command line (the windows with the error is opened but I don't care) :

proj = openProject(cd)

The command windows show the properties of the project :

proj = 

  Project with properties:

                        Name: "mainProject"
    SourceControlIntegration: ""
          RepositoryLocation: ""
       SourceControlMessages: [1×0 string]
                    ReadOnly: 0
                    TopLevel: 1
                Dependencies: [1×1 digraph]
                  Categories: [1×1 matlab.project.Category]
                       Files: [1×0 matlab.project.ProjectFile]
                   Shortcuts: [1×0 matlab.project.Shortcut]
                 ProjectPath: [1×0 matlab.project.PathFolder]
           ProjectReferences: [1×2 matlab.project.ProjectReference]
                StartupFiles: [1×0 string]
               ShutdownFiles: [1×0 string]
                 Description: ""
                  RootFolder: "D:\Mes_Documents\travail\testNewUser\mainProject"
        ProjectStartupFolder: "D:\Mes_Documents\travail\testNewUser\mainProject"
         SimulinkCacheFolder: ""
       SimulinkCodeGenFolder: ""

As I can see the ProjectReferences property, I would check on them if there is an issue of availability for one reference.

       >> ref1=proj.ProjectReferences(1)

ref1 = 

  ProjectReference with properties:

           Project: [1×1 matlab.project.Project]
              File: "D:\Mes_Documents\travail\testNewUser\parentA"
    StoredLocation: "../parentA"
              Type: "Relative"

>> ref2=proj.ProjectReferences(2)

ref2 = 

  ProjectReference with properties:

              File: "D:\Mes_Documents\travail\testNewUser\parentB"
    StoredLocation: "../parentB"
              Type: "Relative"

My "ugly" way to check is to do :

              try
ref1.Project;
catch err
    % no error
err.identifier
end
try
ref2.Project;
catch err
    % there is one, show the identifier
err.identifier
end

ans =

    'MATLAB:project:api:StaleProjectHandle'

And test if I catch the error.

I would be happy to find a more acceptable method to identify missing referenced proejct.