Get the buffer associated with this V-Table
The buffer associated with this v-table builder that contains the addresses.
Complete a row of vtable entries in the buffer, returning the index mark of the vtable run + the number of entries.
The index mark (i.e. location in the buffer this run exists), the number of entries, and the last cursor position.
Encode a V-Table for a semi-parsed STEP serialized object, by encoding the byte positions of all the fields.