Enable returning full cache with GWDataFindApp.get_cache_data
This MR simplifies the GWDataFindApp.get_cache_data()
method to allow retrieving the entire cache, which is required to test the existence of keys in the outermost cache layer (currently <ext>
, but probably <obs>
in the future).
In practice this allows calls to get_cache_data()
with no arguments, while the response to calls with arguments is unchanged.