Getting value of remaining options/arguments

[the-risk-taker]

This was asked in #715 but wasn't explicitly answered if that is possible.

So, my problem is concerning the fact that I have a list of known arguments (passed from command line or config file) and many more unknown arguments (passed from config file) which I need to pass through to add functions.

Let's say I have functions:

void add(const char* name, const int value);
void add(const char* name, const bool value);
void add(const char* name, const char* value);

And I have similar program and config file to those from: #715 (reply in thread) and as the result I want to get:

...
Remaining:
  kafka.options.A = 360
  kafka.options.A = /path/to/something
  kafka.options.A = list of some values
  kafka.options.A = another
  kafka.options.A = again
  kafka.options.A = probably not the last one

So at the end I would like to get list of strings like kafka.options.A = 360 which I could then split into a string and a value and use for example like: add("kafka.options.A", 360), or at best, get a vector of pairs: vector<string, std::variant<int, bool, string>> which I could easily pass to add.

Is that somehow possible in CLI11?