Delphi + IOS: how to import a Const defined in a third party library?

In a third party library I have a definition

FOUNDATION_EXPORT NSString * __nonnull const kFIRInstanceIDTokenRefreshNotification;

      

        
        
        
      

    

and I need to import it into delphi so that I can access it under ios at runtime. how to do it? I look at the delphi source code, they do it like this:

FrameworkMod := LoadLibrary(PWideChar(FwkPath));
result := GetProcAddress(FrameworkMod, PWideChar(ConstStr));

      

        
        
        
      

    

but how is there a third party library how to do it LoadLibrary(PWideChar(FwkPath));

? which path to use in FwkPath?