I'm doing some due-diligence and wondering if there's any old topics about 
extending interfaces to support field sets.

ie.
type WithID interface {
   ID string
}
type X struct { ID string }
type Y struct { ID string }
func PrintID(item WithID) {
  fmt.Println(item.ID)
}

In the above the PrintID function only accepts structs with a field named 
`ID` - which X & Y satisfy. This is sort of like duck typing but with 
fields.

I've 
found https://groups.google.com/g/golang-nuts/c/18gH5TR_3ZE/m/9dyyT4veBgAJ 
but I don't know the discussion the person was referencing and it seems 
specific to generics.

thanks,
dave

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