Unable to use TSharedRef in C++ Blueprint function regardless of include.

Development Programming & Scripting C++
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1

The docs say to use include “Templates/SharedPointer.h” but no matter what I try I’m unable to get my C++ Bp function class to compile when using TSharedRef. The Unreal Build Tool throws the error UBT001:Unable to find 'class', 'delegate', 'enum', or 'struct' with name 'TSharedRef'

What am i missing here?

GuidUtils.h

#pragma once
#include "CoreMinimal.h"
#include "Templates/SharedPointer.h"
#include "GuidUtils.generated.h"

UENUM(BlueprintType)
enum EResult {
	Success,
	Failure
};

UCLASS()
class VR_BASE_API UGuidExtensions : public UBlueprintFunctionLibrary{
	GENERATED_BODY()

public:
	UFUNCTION(BlueprintCallable, Category = "MessageUtils", meta = (DisplayName = "Try Parse Guid (Message)", BlueprintThreadSafe, ExpandEnumAsExecs = "result"))
	static TSharedRef<FGuid>& TryParseGuid(
		UPARAM(ref) const FString& message,
		TEnumAsByte<EResult >& result
	);
}

GuidUtils.cpp

TSharedRef<FGuid>& TryParseGuid(
	UPARAM(ref) const FString& message,
	TEnumAsByte<EResult >& result
){
	//Declare local variable
	FString strGuid;

	//Truncated: Message handling populates local variable with a Guid string
	
	TSharedRef<FGuid>& guidOut;
	
	if(FGuid::Parse(strGuid, guidOut)){
		result = Success;
	}else{
		result = Failure;
	}
}

Edit: Fixed formatting failure.