System.Security.Util.TokenBasedSet.SpecialSplit C# (CSharp) Method

        internal void SpecialSplit(ref TokenBasedSet unrestrictedPermSet, ref TokenBasedSet normalPermSet, bool ignoreTypeLoadFailures)
        {
           int maxIndex = GetMaxUsedIndex();

            for (int i = GetStartingIndex(); i <= maxIndex; ++i)
            {
                Object obj = GetItem( i );
                if (obj != null)
                {
                    IPermission perm = obj as IPermission;
                    if (perm == null)
                        perm = PermissionSet.CreatePerm(obj, ignoreTypeLoadFailures);
                    PermissionToken token = PermissionToken.GetToken(perm);

                    if (perm == null || token == null)
                        continue;

                    if (perm is IUnrestrictedPermission)
                    {
                        // Add to unrestrictedPermSet
                        if (unrestrictedPermSet == null)
                            unrestrictedPermSet = new TokenBasedSet();
                        unrestrictedPermSet.SetItem(token.m_index, perm);
                    }
                    else
                    {
                        // Add to normalPermSet
                        if (normalPermSet == null)
                            normalPermSet = new TokenBasedSet();
                        normalPermSet.SetItem(token.m_index, perm);
                    }

                }

            }
            
        }
    }