Avaivability through the F5 rest api

Hello

I am struggling getting one piece of info from the F5 API that I can find so easily through the web interface, the last change to a pool members avaivability

I have tried finding it in these paths

mgmt/tm/ltm/pool/~Partition~Pool/

mgmt/tm/ltm/pool/~Partition~Pool/stats

mgmt/tm/ltm/pool/~Partition~Pool/members

mgmt/tm/ltm/pool/~Partition~Pool/members/member

While going through documentation I found references to:

/mgmt/cm/adc-core/working-config/ltm/pool

But I recieve 404 errors, and if I go down to

/mgmt/cm/

it doesn't list the adc-core as an option

Attaches is a screenshot of the number I can find in the Web-UI but am struggling to find otherwise