How to use EventToCommandBehavior in WPF Scheduler (Calendar)

public class SchedulerViewModel : NotificationObject
{
    private ICommand editorOpeningCommand;
    private ICommand editorClosingCommand;
    private ICommand viewChangedCommand;
 
    public ICommand EditorOpeningCommand
    {
        get { return editorOpeningCommand; }
    }
 
    public ICommand ViewChangedCommand
    {
        get { return viewChangedCommand; }
    }
 
    public ICommand EditorClosingCommand
    {
        get { return editorClosingCommand; }
    }
 
    public ICommand ContextMenuOpeningCommand
    {
        get { return contextmenuOpeningCommand; }
    }
 
    public void editorOpening(AppointmentEditorOpeningEventArgs arg)
    {
        MessageBox.Show("Editor Opened");
    }
 
    public SchedulerViewModel()
    {
        editorOpeningCommand = new DelegateCommand<AppointmentEditorOpeningEventArgs>(editorOpening);
        editorClosingCommand = new DelegateCommand<AppointmentEditorClosingEventArgs>(EditorClosing);
        contextmenuOpeningCommand = new DelegateCommand<SchedulerContextMenuOpeningEventArgs>(ContextmenuOpening);
        viewChangedCommand = new DelegateCommand<ViewChangedEventArgs>(ViewChanged);
    }
 
    public void ViewChanged(ViewChangedEventArgs arg)
    {
        var oldValue = arg.OldValue;
        var newValue = arg.NewValue;
        if(oldValue != null)
            MessageBox.Show("View changed");
    }
 
    public void EditorClosing(AppointmentEditorClosingEventArgs arg)
    {
        MessageBox.Show("Editor closed");
    }
 
    public void ContextmenuOpening(SchedulerContextMenuOpeningEventArgs arg)
    {
        MessageBox.Show("Context Menu opened");
    }
}

<Window.DataContext>
    <local:SchedulerViewModel/>
</Window.DataContext>
 
<Grid>
    <scheduler:SfScheduler x:Name="scheduler" 
                ViewType="Week"
                local:AppointmentEditorOpeningCommandWithEventArgs.Command="{Binding EditorOpeningCommand}"
                local:AppointmentEditorClosingCommandWithEventArgs.Command="{Binding EditorClosingCommand}"
                local:VisibleDatesChangingCommandWithEventArgs.Command="{Binding ViewChangedCommand}">
    </scheduler:SfScheduler>
</Grid>