namespace Microsoft.Extensions.Options { public class ValidateOptions<TOptions> : IValidateOptions<TOptions> where TOptions : class { public string Name { get; } public Func<TOptions, bool> Validation { get; } public string FailureMessage { get; } public ValidateOptions(string name, Func<TOptions, bool> validation, string failureMessage); public ValidateOptionsResult Validate(string name, TOptions options); } }