The interface to the virtual-table mechanism defined above (back up
to a comment remarkably similar to this one) is currently considered
to be experimental. The interface might change in incompatible ways.
If this is a problem for you, do not use the interface at this time.
When the virtual-table mechanism stabilizes, we will declare the
interface fixed, support it indefinitely, and remove this comment.
The interface to the virtual-table mechanism defined above (back up to a comment remarkably similar to this one) is currently considered to be experimental. The interface might change in incompatible ways. If this is a problem for you, do not use the interface at this time.
When the virtual-table mechanism stabilizes, we will declare the interface fixed, support it indefinitely, and remove this comment.