/// <summary>Tests whether the specified <paramref name="key"/> starts with this Subspace's prefix, indicating that the Subspace logically contains <paramref name="key"/>.</summary>
/// <param name="key">The key to be tested</param>
/// <exception cref="System.ArgumentNullException">If <paramref name="key"/> is null</exception>
public static bool Contains <TKey>(this FdbSubspace subspace, [NotNull] TKey key)
where TKey : IFdbKey
{
if (key == null)
{
throw new ArgumentNullException("key");
}
return(subspace.Contains(key.ToFoundationDbKey()));
}
/// <summary>Test if a key is contained by this database instance.</summary>
/// <param name="key">Key to test</param>
/// <returns>True if the key is not null and contained inside the globale subspace</returns>
public bool Contains(Slice key)
{
return(key.HasValue && m_globalSpace.Contains(key));
}