=== SetValueCommand ===
This command on the <code>ContentViewModel</code> orchestrates value assignments and handles the '''creation of new traits''' if necessary.
* '''If the a trait exists:''' The value will be overwritten.* '''If a editable property exists:''' The property's value will be overwritten (if it is not locked/read-only).* '''If neither existsOtherwise:''' A trait is added to the {{UBIK}} content.
'''XAML Example (Setting a value):'''