<PackageReference Include="Microsoft.Extensions.Configuration.Abstractions" Version="9.0.4" />

ConfigurationKeyNameAttribute

Specifies the key name for a configuration property.
using System; using System.Runtime.CompilerServices; namespace Microsoft.Extensions.Configuration { [System.Runtime.CompilerServices.NullableContext(1)] [System.Runtime.CompilerServices.Nullable(0)] [AttributeUsage(AttributeTargets.Property)] public sealed class ConfigurationKeyNameAttribute : Attribute { public string Name { get; } public ConfigurationKeyNameAttribute(string name) { Name = name; } } }