check_dfll_unique_names: Check if names in a distance metrics list-like object are unique
Description
Check if names in a distance metrics list-like object are unique
Usage
check_dfll_unique_names(dfll)
Value
Doesn't return any value. Raises error if the items of dfll aren't
unique across layer 1 or within each item of layer 2.
Arguments
- dfll
A distance metrics list-like list object to be validated.