[4.7p2] server rpc declaration?

Development Programming & Scripting
14

I have started a brand new code (4.7p4 / c++ / basic code), just added an AActor derived class with this code

UFUNCTION(server, withvalidation, reliable)
	void ServerMove(FVector Velocity, bool bSweep);

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bool ASpider::ServerMove_Validate(FVector Velocity, bool bSweep){ return true; }
void ASpider::ServerMove_Implementation(FVector Velocity, bool bSweep)
{
	AddActorWorldOffset(Velocity, bSweep);
}

Et voila:

1>C:\Users\\Documents\Unreal Projects\SpiderTest\Source\SpiderTest\Spider/Spider.h(14)( : warning C4996: Function Spider::ServerMove needs native implementation by virtual void ServerMove_Implementation(FVector Velocity, bool bSweep) due to its properties. Currently ServerMove_Implementation declaration is autogenerated by UHT. Since next release you'll have to provide declaration on your own. Please update your code before upgrading to the next release, otherwise your project will no longer compile.

All this was made in 4.7 preview 4.