/// <summary>
/// Creates an instance of the <see cref="LegacyLogger"/> class using the
/// specified provider node.
/// </summary>
/// <param name="options">
/// A <see cref="IDictionary{TKey,TValue}"/> object that contains the
/// options for the logger to be created.
/// </param>
/// <returns>
/// The newly created <see cref="LegacyLogger"/> object.
/// </returns>
public ILogger CreateLogger(IDictionary<string, string> options) {
string logger_name = ProviderOptions.GetIfExists(options,
Strings.kLoggerName, Strings.kDefaultLoggerName);
string xml_element_name = ProviderOptions.GetIfExists(options,
Strings.kLegacyLoggerXmlElementName,
Strings.kDefaultLegacyLoggerXmlElementName);
// Get the xml element that is used to configure the legacy log4net
// logger.
XmlElement element = settings_.XmlElements[xml_element_name];
LegacyLogger legacy_logger = new LegacyLogger(element, logger_name);
legacy_logger.Configure();
return legacy_logger;
}