System.Security.Policy.Evidence.GetHostEnumerator C# (CSharp) Method

    public System.Collections.IEnumerator GetHostEnumerator() { throw null; }
    public void Merge(System.Security.Policy.Evidence evidence) { }

	// Implement the IMembership interface.
	public bool Check(Evidence evidence)
			{
				if(evidence == null)
				{
					return false;
				}
				IEnumerator e = evidence.GetHostEnumerator();
				IEnumerator e2;
				while(e.MoveNext())
				{
					ApplicationDirectory appDir =
						(e.Current as ApplicationDirectory);
					if(appDir != null)
					{
						e2 = evidence.GetHostEnumerator();
						while(e2.MoveNext())
						{
							Url url = (e2.Current as Url);
							if(url != null)
							{
								if(Match(url.parser, appDir.Directory))
								{
									return true;
								}
							}
						}
					}
				}
				return false;
			}