private void ReadScope(XElement element, BindingBuilder<object> builder)
		{
			XAttribute scopeAttribute = element.Attribute("scope");

			if (scopeAttribute == null || String.IsNullOrEmpty(scopeAttribute.Value))
			{
				builder.InTransientScope();
				return;
			}

			string value = scopeAttribute.Value.ToLower();

			switch (value)
			{
				case "transient":
					builder.InTransientScope();
					break;

				case "singleton":
					builder.InSingletonScope();
					break;

				case "thread":
					builder.InThreadScope();
					break;

				case "request":
					builder.InRequestScope();
					break;

				default:
					throw new ConfigurationErrorsException(String.Format("The 'bind' element has an unknown value '{0}' for its 'scope' attribute. Valid values are transient, singleton, thread, and request.", value));
			}
		}