/// <summary>
/// Retrieves the specified <see cref="ConfigurationSection"/> from the configuration file, and starts watching for
/// its changes if not watching already.
/// </summary>
/// <param name="sectionName">The section name.</param>
/// <returns>The section, or <see langword="null"/> if it doesn't exist.</returns>
public ConfigurationSection GetSection(string sectionName)
{
ConfigurationSection configurationSection = DoGetSection(sectionName);
SetConfigurationWatchers(sectionName, configurationSection);
configurationSection = CompositeConfigurationHandler.CheckGetSection(sectionName, configurationSection);
return(HierarchicalConfigurationHandler.CheckGetSection(sectionName, configurationSection));
}
