public void UpdateHit(GFStatKey key, double gf)
{
if (-1d <= gf && gf <= 1d)
{
if (_stats.ContainsKey(key))
{
_stats[key].Update(gf);
}
else
{
var value = new GFStatValue();
value.Update(gf);
_stats.Add(key, value);
}
}
}