Example code for ##Class(Backup.General).ExternalFreeze() and ##Class(Backup.General).ExternalThaw() in Native InterSystems Cache REST setup

I have a few questions:

1) Why exactly do you need to call these via REST? What scenario do you have where running something like the example code in the documentation wouldn't work for you?

2) Assuming you do have a good reason to make these calls via REST, which part do you need help with? Creating the REST endpoint? Making the REST request?  Writing the code on the back end to run the appropriate commands?