CopyTo/CopyToDirectory With Directories

[vector-man]

This throws a "System.NotSupportedException" :

IDirectory dir = FileSystemManager.Default.ResolveDirectory(@"C:\Users\Name\Documents\Platform Test\A");
IDirectory dir2 = FileSystemManager.Default.ResolveDirectory(@"C:\Users\Name\Documents\Platform Test\B");
dir.CopyToDirectory(dir2, false);

// This does too: dir.CopyTo(dir2, false);

Is CopyToDirectory/CopyTo supported on directories?