/// <summary>
/// Adds Umbraco back office authorization policies
/// </summary>
public static IUmbracoBuilder AddBackOfficeAuthorizationPolicies(this IUmbracoBuilder builder, string backOfficeAuthenticationScheme = Constants.Security.BackOfficeAuthenticationType)
{
builder.AddBackOfficeAuthorizationPoliciesInternal(backOfficeAuthenticationScheme);
builder.Services.AddSingleton <IAuthorizationHandler, FeatureAuthorizeHandler>();
builder.Services.AddAuthorization(options
=> options.AddPolicy(AuthorizationPolicies.UmbracoFeatureEnabled, policy
=> policy.Requirements.Add(new FeatureAuthorizeRequirement())));
return(builder);
}