namespace Microsoft.Extensions.Hosting { public static class HostDefaults { public static readonly string ApplicationKey; public static readonly string EnvironmentKey; public static readonly string ContentRootKey; } } namespace Microsoft.Extensions.Hosting { public static class HostEnvironmentEnvExtensions { public static bool IsDevelopment(this IHostEnvironment hostEnvironment); public static bool IsStaging(this IHostEnvironment hostEnvironment); public static bool IsProduction(this IHostEnvironment hostEnvironment); public static bool IsEnvironment(this IHostEnvironment hostEnvironment, string environmentName); } }