<PackageReference Include="Microsoft.Extensions.FileProviders.Abstractions" Version="11.0.0-preview.4.26230.115" />

Microsoft.Extensions.FileProviders.NotFoundFileInfo

public class NotFoundFileInfo : IFileInfo
Represents a nonexistent file.
namespace Microsoft.Extensions.FileProviders { public class NotFoundFileInfo : IFileInfo { public bool Exists { get; } public bool IsDirectory { get; } public DateTimeOffset LastModified { get; } public long Length { get; } public string Name { get; } public string PhysicalPath { get; } public NotFoundFileInfo(string name); public Stream CreateReadStream(); } }