validate_unique_presence(T, KeysRequired) ->
KeysOptional = [],
validate_unique_presence(T, KeysRequired, KeysOptional).
-spec validate_unique_presence(t(K, _V), [K], [K]) ->
validate_unique_presence(T, KeysRequired) ->
KeysOptional = [],
validate_unique_presence(T, KeysRequired, KeysOptional).
-spec validate_unique_presence(t(K, _V), [K], [K]) ->