How do I subclass TwoWire without creating the Wire instance(s)?

Is there a way to subclass TwoWire without creating the Wire instance(s)?

It seems that because `variant.h` and `WIRE_INTERFACES_COUNT` are both within `Wire.h`, it isn't possible to use the TwoWire class without the instances being created.
I am trying to subclass TwoWire and create instances of my class instead.

Start by reading Wire.h and variant.h, focusing on how WIRE_INTERFACES_COUNT and the Wire instances are declared. Trace how TwoWire is exposed and determine the intended separation between the class and its instances. Done means the issue has a documented, agreed approach for subclassing TwoWire without creating the default Wire instances.

Written by the indexing model from the issue text.