<PackageReference Include="Microsoft.Extensions.Configuration.Abstractions" Version="10.0.5" />

Microsoft.Extensions.Configuration.ConfigurationExtensions

public static class ConfigurationExtensions
Provides extension methods for configuration classes.
namespace Microsoft.Extensions.Configuration { public static class ConfigurationExtensions { public static IConfigurationBuilder Add<[System.Runtime.CompilerServices.Nullable(0)] TSource>(this IConfigurationBuilder builder, Action<TSource> configureSource) where TSource : IConfigurationSource, new; public static string GetConnectionString(this IConfiguration configuration, string name); public static IEnumerable<KeyValuePair<string, string>> AsEnumerable(this IConfiguration configuration); public static IEnumerable<KeyValuePair<string, string>> AsEnumerable(this IConfiguration configuration, bool makePathsRelative); public static bool Exists(this IConfigurationSection section); public static IConfigurationSection GetRequiredSection(this IConfiguration configuration, string key); } }