/// <summary>
/// Gets the child node by its path.
/// </summary>
/// <param name="path">Path to the node to get.</param>
/// <param name="throwIfNone">Indicates whether an exception
/// must be thrown if there is no node with the specified path, or not.</param>
/// <returns>
/// Path node, if found;
/// otherwise, <see langword="null"/>.
/// </returns>
public static IPathNode Resolve(this IPathNode node, string path, bool throwIfNone)
{
var result = node.Resolve(path);
if (result == null && throwIfNone)
{
throw new InvalidOperationException(string.Format(Strings.ExPathXNotFound, path));
}
return(result);
}