How to serialize and de-serialize the WinForms RibbonControlAdv state?

void Form1_FormClosing(object sender, FormClosingEventArgs e)
{
    //To save the RibbonControlAdv
    this.ribbonControlAdv1.SaveState();
}
void Form1_Load(object sender, EventArgs e)
{
    //To load the saved state of RibbonControlAdv
    this.ribbonControlAdv1.LoadState();
}

Private Sub Form1_FormClosing(ByVal sender As Object, ByVal e As FormClosingEventArgs)
    'To save the RibbonControlAdv 
    Me.ribbonControlAdv1.SaveState()
End Sub
Private Sub Form1_Load(ByVal sender As Object, ByVal e As EventArgs)
    'To load the saved state of RibbonControlAdv
    Me.ribbonControlAdv1.LoadState()
End Sub