PrivilegedConfigurationManager.cs

using System.Security.Permissions;

namespace System.Configuration
{
    [ConfigurationPermission(SecurityAction.Assert, Unrestricted = true)]
    internal static class PrivilegedConfigurationManager
    {
        internal static ConnectionStringSettingsCollection ConnectionStrings => ConfigurationManager.ConnectionStrings;

        internal static object GetSection(string sectionName)
        {
            return ConfigurationManager.GetSection(sectionName);
        }
    }
}