System.Security.FrameSecurityDescriptor.DecrementOverridesCount C# (CSharp) Method

        private static extern void DecrementOverridesCount();
        [MethodImplAttribute(MethodImplOptions.InternalCall)]

 internal void RevertPermitOnly()
 {
     if (this.HasImperativeRestrictions())
     {
         FrameSecurityDescriptor.DecrementOverridesCount();
         this.m_restriction = null;
     }
 }