<PackageReference Include="Microsoft.Extensions.Configuration.Abstractions" Version="9.0.0-rc.1.24431.7" />

IConfigurationProvider

public interface IConfigurationProvider
Provides configuration key/values for an application.
IEnumerable<string> GetChildKeys(IEnumerable<string> earlierKeys, string parentPath)

Returns the immediate descendant configuration keys for a given parent path based on this IConfigurationProviders data and the set of keys returned by all the preceding IConfigurationProviders.

IChangeToken GetReloadToken()

Attempts to get an IChangeToken for change tracking.

void Load()

Loads configuration values from the source represented by this IConfigurationProvider.

void Set(string key, string value)

Sets a configuration value for the specified key.

bool TryGet(string key, out string value)

Tries to get a configuration value for the specified key.