Copy and paste a function like 'Create Variable' over to another API Endpoint (instead of having to turn it into a custom function)

Copy and paste a function like 'Create Variable' over to another API Endpoint (instead of having to turn it into a custom function)

I like and use custom functions but sometimes I just want to copy 1 function over to another API endpoint. For example:

I create an API endpoint then when I come back to it I realise in other endpoints I've added more preconditions etc. that I didn't think about at that time, so would be great to copy and past it over easily to another API endpoint (in the same workspace).