I often that I want to add a key that is very similar to an existing one. For example, under appsettings one generally add keys named ‘add’. To add another setting, I’d like to clone an existing ‘add’ key and then change the ‘key’ and ‘value’ values as needed. This would save me the trouble of adding the ‘key’ and ‘value’ value items. The time/effort savings is even greater for more complicated keys like a service binding.