[Flutter] How to replace SizedBox with the new Gap widget for spacing?

I've been using SizedBox in Flutter to add spacing between widgets by specifying width and height, like this:

SizedBox(height: 20), SizedBox(width: 10),

I recently came across the Gap widget, which seems like a more concise way to handle spacing. How can I effectively replace SizedBox with Gap in my Flutter project? What are the main differences or advantages of using Gap over SizedBox?

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