/// <summary>
 /// Creates a new instance of <c>ConfigurationCollection</c>.
 /// </summary>
 public ConfigurationCollection(ConfigurationCollection value)
 {
     this.AddRange(value);
 }
 /// <summary>
 /// Adds a <see cref="ConfigurationCollection"/>.
 /// </summary>
 /// <param name="value">The <see cref="ConfigurationCollection"/> to add.</param>
 public void AddRange(ConfigurationCollection value)
 {
     foreach (IConfiguration configuration in value)
     {
         this.Add(configuration);
     }
 }