/// <summary>
/// Adds test users.
/// </summary>
/// <param name="builder">The builder.</param>
/// <param name="users">The users.</param>
/// <returns></returns>
public static IIdentityServerBuilder AddTestUsers(this IIdentityServerBuilder builder, List <TestUser> users)
{
builder.Services.AddSingleton(new TestUserStore(users));
builder.AddProfileService <TestUserProfileService>();
builder.AddResourceOwnerValidator <TestUserResourceOwnerPasswordValidator>();
builder.AddBackchannelAuthenticationUserValidator <TestBackchannelLoginUserValidator>();
return(builder);
}