/// <summary>
/// Determine if the item is in the estimator.
/// </summary>
/// <param name="item"></param>
/// <returns></returns>
public bool Contains(TEntity item)
{
//if the strata estimator can't determine membership, assume it is in there (and count it toward false positives)
//this only happens for a very small subset of items, that have a strata above the maximum strata of the estimator.
return(_strataEstimator.Contains(item) ?? true);
}
