GetLifetimeReplicatedProps in comment causes compile error

Development Programming & Scripting
3

I don’t think that I’ve written original question precisely enough so I’ll post some example code.

TestActor.h

#pragma once

#include "GameFramework/Actor.h"
#include "TestActor.generated.h"

UCLASS()
class TESTPROJECT_API ATestActor : public AActor
{
	GENERATED_BODY()
	
public:	
	// Sets default values for this actor's properties
	ATestActor();

	// Something Something GetLifetimeReplicatedProps, this is not a commented out function declaration
	// The above comment stops file from compiling, if the "GetLifetimeReplicatedProps" string is removed (or broken with space/underscore etc.)from this and the above comment the file can now compile

	UPROPERTY(Replicated)
	int32 MyReplicatedInt;
};

TestActor.cpp

#include "TestProject.h"
#include "TestActor.h"
#include "UnrealNetwork.h"

// Sets default values
ATestActor::ATestActor()
{
 	// Set this actor to call Tick() every frame.  You can turn this off to improve performance if you don't need it.
	PrimaryActorTick.bCanEverTick = true;

	SetReplicates(true);
	bAlwaysRelevant = true;
}

// Implementation of replication function, since i want to have more control over what's getting replicated to who
void ATestActor::GetLifetimeReplicatedProps(TArray< FLifetimeProperty > & OutLifetimeProps) const
{
	DOREPLIFETIME(ATestActor, MyReplicatedInt);
}

The issue is not with the commenting out function declaration.