/// <summary>
 /// Shorthand alias for "WithEnvironmentVariable" using the common key set beforehand
 /// "CommonExtensions.WithCommonKey"
 /// </summary>
 /// <param name="builder"></param>
 /// <returns></returns>
 public static IEnvironmentBuilder Env(this IEnvironmentBuilder builder, Action <IEnvironmentConfiguration> configuration = null)
 {
     return(builder.WithEnvironmentVariable(builder.Configuration.GetCommonKey(), configuration));
 }
 /// <summary>
 /// Shorthand for "WithEnvironmentVariable"
 /// </summary>
 /// <param name="builder"></param>
 /// <param name="name">the name of the variable</param>
 /// <param name="configuration">the configuration to use</param>
 /// <returns></returns>
 public static IEnvironmentBuilder Env(this IEnvironmentBuilder builder, string name, Action <IEnvironmentConfiguration> configuration = null)
 {
     return(builder.WithEnvironmentVariable(name, configuration));
 }