System.Security.Permissions.PrincipalPermission.Union C# (CSharp) Method

        public IPermission Union(IPermission other)
        {
            if (other == null)
            {
                return Copy();
            }
            else if (!VerifyType(other))
            {
                throw new ArgumentException(SR.Argument_WrongType, GetType().FullName);
            }

            PrincipalPermission operand = (PrincipalPermission)other;

            if (IsUnrestricted() || operand.IsUnrestricted())
            {
                return new PrincipalPermission(PermissionState.Unrestricted);
            }

            IDRole[] idrolesArray = new IDRole[_idArray.Length + operand._idArray.Length];
            Array.Copy(_idArray, 0, idrolesArray, 0, _idArray.Length);
            Array.Copy(operand._idArray, 0, idrolesArray, _idArray.Length, operand._idArray.Length);

            return new PrincipalPermission(idrolesArray);
        }

 public new void JobAnswerDelete(JobAnswer entity)
 {
     PrincipalPermission permReg = new PrincipalPermission(Thread.CurrentPrincipal.Identity.Name, "Registered");
       PrincipalPermission permAdmin = new PrincipalPermission(Thread.CurrentPrincipal.Identity.Name, "Administrator");
       permReg.Union(permAdmin).Demand();
       base.JobAnswerDelete(entity);
 }