Unreal engine 5.1 error using LandscapeInfo

[Damien220]

Greeting everyone.
I am getting the following error whenever i am referring to the ULandscapeInfo class in my code:
error LNK2019: unresolved external symbol "public: __cdecl ULandscapeInfo::ULandscapeInfo(class FObjectInitializer const &)"
I already added the Landscape module to the build.cs file as well as LandscapeEditor, and when i add LandscapeInfo to the build file i am getting an error that this module don’t exist.
So my question is: ULandscapeInfo is this class available in UE5.1? (I went through the documentation and found out that it exists, but getting this error is making me ask this question).
Second how should i implement this class to be able to use it in my code?
So far the code looks like this:

landactor = {};
//UGameplayStatics::GetAllActorsOfClass(world, ALandscape::StaticClass(),land);
UGameplayStatics::GetAllActorsOfClass(GetWorld(), AActor::StaticClass(), landactor);
//ALandscape* land1 = Cast<ALandscape>(landactor[0]);
UE_LOG(LogTemp, Display, TEXT("Land number is: %d"), landactor.Num());
//UE_LOG(LogTemp, Display, TEXT("The cast is done"));
for (int i = 0; i < landactor.Num(); i++) {

	ALandscape* land = Cast<ALandscape>(landactor[i]);
	if (land) {
		ULandscapeInfo info =  ULandscapeInfo();
		info.Initialize(GetWorld(), land->GetLandscapeGuid());
		int32 num = info.ComponentNumSubsections;
		UE_LOG(LogTemp, Display, TEXT("the bool %d"), num);
		/*Uncommenting this will make the error 
		ULandscapeInfo* landInfo  = Cast<ULandscapeInfo>(land);
		if (landInfo) {
			UE_LOG(LogTemp, Display, TEXT("The cast is done"));
		}*/
		
		break;
	}

[Damien220]

For anyone that comes to this question, I have found the solution to be able to work with the Landscape module and all the classes related to it:
First you can read about the minimalist API of the Landscape API here:

How to add a class derived from ALandScape class

Look here emaer. Houdini technology system base line (C): UE4 Landscape Component of the next multi-selection support (titanwolf.org) They use stuff like SetHeightData search for it in their CPP. Now on to FLandscapeEditDataInterface::SetHeightData | Unreal Engine Documentation As you can see it’s a function that is part of the landscape class So they are using the landscape data inside their Cpp file. You see they some how got access to the Landscape module but it links to…

This topic talks about the Landscape API being a minimalist so you directly access or create an object of the child classes.
So the way to use the child classes is by
1- create the Landscape object using : ALandscape* land = Cast<ALandscape>();
2- using the land object you can get a reference of other classes by using the getClassname() method: example: ULandscapeInfo* landInfo = land->GetLandscapeInfo(); or ALandscapeProxy* proxy = LandComponent->GetLandscapeProxy();
In the proxy example we are using the LandComponent object which is a ULandscapeComponent.
For reference of the Landscape module:
https://docs.unrealengine.com/4.26/en-US/API/Runtime/Landscape/