exemplo do exemplo

gistfile1.txt

using System;
using System.Collections.Generic;
using System.Text;
using System.Threading.Tasks;

namespace Naylah
{
    public class ConfigurationStore : Dictionary<string, object>
    {
        public ConfigurationStore(IEnumerable<IConfigurationSource> configurationSources)
        {
           
        }

        public async Task Initialize()
        {
            foreach (var config in configurationSources)
            {
                foreach (var configitem in config.GetConfigurations())
                {
                    //verificar se existe para override....
                    Upsert(configitem.Key, configitem.Value);

                }

            }
        }
    }

    public interface IConfigurationSource
    {
        Task<Dictionary<string, object>> GetConfigurations();
    }


    public class ProcessEnvConfigurationSource : IConfigurationSource
    {
        public Dictionary<string, object> GetConfigurations()
        {
            Dictionary<string, object> processEnvConfigs = new Dictionary<string, object>();
            ///for///
            //......

            return processEnvConfigs;
        }
    }

    public class IndexScriptVariableConfigurationSource : IConfigurationSource
    {
        public Dictionary<string, object> GetConfigurations()
        {
            ///pegar info, descriptigravar
            Dictionary<string, object> IndexScriptVariablConfigs = new Dictionary<string, object>();
            ///for///
            //......

            return IndexScriptVariablConfigs;
        }
    }

    public class RestConfigurationSource : IConfigurationSource
    {
        public Dictionary<string, object> GetConfigurations()
        {
            //http
            ///pegar info, descriptigravar
            Dictionary<string, object> IndexScriptVariablConfigs = new Dictionary<string, object>();
            ///for///
            //......

            return IndexScriptVariablConfigs;
        }
    }



    ////
    var s1 = new ProcessEnvConfigurationSource();
    var s2 = new IndexScriptVariableConfigurationSource();
    var store = new ConfigurationStore(new List<>{s1, s2});
    store.InitAsyc();

    var phurl = store["powerhuburl"]
}