at_params_list_init defintion.

Hello, I am writing an AT command response parser for my custom AT commands.
I thought about using nordic's parser utils found in include/modem/at_params.h
but I have been having trouble founding the function definitions for the functions there.
for example now I want to use at_params_list_init. but when I compile it doesn't find a definition either.
are these functions only intended for nordic's internal use?

thanks in advance,
shlomo

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