Configure Policy Requirement Handler

Startup.cs

public void ConfigureServices(IServiceCollection services)
{
	// ... restante do códito omitido 
	
	services.AddAuthorization(options =>
	{
		options.AddPolicy("DeleteUserPolicy", policy =>
			policy.Requirements.Add(new DeleteUserRequirement("CanDeleteUser")));
	});

	services.AddSingleton<IAuthorizationHandler, DeleteUserRequirementHandler>();
}