Allow a MFD to be controlled via Emesary notifications (notifications.PFDEventNotification);
Notification needs to be constructed with the following parameters;
1 - MFD designation (text; name of MFD)
2 - MFD identity (int, id of the MFD within the model). Default 1; same as used when creating the MFD
3 - Event type (PFDEventNotification.SoftKeyPushed, notifications.PFDEventNotification.ChangeMenuText
4 - Event parameter.
a) for PFDEventNotification.SoftKeyPushed an int identifying the button
b) for notifications.PFDEventNotification.ChangeMenuText a hash array containing the menu ID and the new text (e.g. [{ Id: 1, Text: "NNN"}])
Method obj.PFD.RegisterWithEmesary(emesary.GlobalTransmitter) need to be called to connect the MFD to a transmitter
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