Widget Id Code Location and Management

  • I have a widget registered named ‘Classroll.’ When viewing the the global $wp_registered_widgets, it appears as “classroll-1”

    My questions is this: How is the widget id managed?

    By managed, I’m really asking:
    How and where does that id get created?
    Where is the code that increments the number?
    How/where is it stored in the db?

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