private void BuildConfiguration()
{
//use the factory
var configFileName = _configurationFactory.GetConfigFileName();
var configurationBuilder = new ConfigurationBuilder()
.SetBasePath(Directory.GetCurrentDirectory())
.AddInMemoryCollection(_defalutValues)
.AddJsonFile($"{configFileName}", optional: false);
//.AddEnvironmentVariables();
var configuration = configurationBuilder.Build();
_channelSettings = configuration.GetSection("channelsettings").Get <IEnumerable <ConfigChannelSettings> >();//.Bind(_channelSettings);
}