/// <summary>
/// Initializes a new instance of the <see cref="Config"/> class.
/// </summary>
/// <param name="root">The root node to base this configuration.</param>
/// <exception cref="ArgumentNullException">"The root value cannot be null."</exception>
public Config(HoconRoot root)
{
if (root.Value == null)
throw new ArgumentNullException("root.Value");
Root = root.Value;
Substitutions = root.Substitutions;
}
/// <summary>
/// Initializes a new instance of the <see cref="Config"/> class.
/// </summary>
/// <param name="root">The root node to base this configuration.</param>
/// <exception cref="ArgumentNullException">This exception is thrown if the given <paramref name="root"/> value is undefined.</exception>
public Config(HoconRoot root)
{
if (root.Value == null)
throw new ArgumentNullException(nameof(root), "The root value cannot be null.");
Root = root.Value;
Substitutions = root.Substitutions;
}