public void Handle(NetworkManager nm, Bot core)
{
if (!core.EnableCpe)
core.RaiseErrorMessage("Protocol error: Received Holdthis while CPE Disabled.");
if (!core.ClientSupportedExtensions.Contains(CPEExtensions.HeldBlock))
core.RaiseErrorMessage("Protocol error: Received HoldThis, which client does not support.");
core.HeldBlock = BlockToHold;
core.CanChangeBlock = (PreventChange > 0);
core.RaiseHeldBlockChange(BlockToHold, PreventChange);
}