Gets a topology version.
(tpm_iterversion iter_id)
Returns a topology version (string) or nil.
| iter_id | Iterator ID (real) |
The function gets the version of the topology that the iterator is pointing to. The version of a topology is the version of ADE in which it was created, for example, "2.026". The function gets the same result as tpm_infoversion. The difference is that tpm_infoversion requires a topology ID, and so it works only on topologies that are open.