Currently, h2⊙ls() return all keys in DKV.
I would be easy to add basic filtering capacity, especially to return only keys of a certain type of objects, like models, frames, jobs, for example:
List of types we want to support:
job (not exposed to user through 'ls': system key)
All those filters can be easily implemented in Astls using KeySnapshot.globalSnapshot().filter(...)
h2o.ls function in Python and R clients should also be extended with a new type parameter.