I can't find GetRandomPointInNavigableRadius() in GetNavigationSystem()

Development Programming & Scripting C++
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1

In my book

FNavLocation RandomPoint;
if(GetWorld()->GetNavigationSystem()->GetRandomPointInNavigableRadius(ThisController->GetPawn()->GetActorLocation(),5000.0f,RandomPoint))

but error : class"UNavigationSystemBase" has no member “GetRandomPointInNavigableRadius”

I’m already written in code

#include "Runtime/Engine/Classes/AI/NavigationSystemBase.h"
#include "Runtime/NavigationSystem/Public/NavigationSystem.h"

How to get and use “GetRandomPointInNavigableRadiu()”??