LseElectricScheme DFS logging

        LseElectricNode curr = source.Plus.DfsInit(plusMark);
        // Interface.Log("+dfs from " + scheme.GetName(curr));

        while (curr) {
            // Interface.Log("+dfs at " + scheme.GetName(curr));
            if (curr == source.Minus) {
                float current = sourceVoltage / baseResistance;
                source.Current = source.Current - current;
                BackTraceCurrent(curr, current);
                goto sourcePassDone;
            }

            LseElectricLink link;
            while (link = curr.DfsNextLink()) {
                // Interface.Log(LStr.Format("+dfs via '$0' to '$1'", scheme.GetName(curr.DfsNext), scheme.GetName(link)));
                if (link.Resistance < LoadResistanceThreshold) {
                    curr = curr.DfsPush();
                    curr.Mark = plusMark;
                    break;
                }
            }

            if (!link) {
                curr = curr.DfsPrevious;
                // Interface.Log("+dfs pop ");
            }
        }

        loads[0, ] = null;
        float totalLoadResistance = 0.0;

        curr = source.Minus.DfsInit(minusMark);
        // Interface.Log("-dfs from " + scheme.GetName(curr));

        while (curr) {
            // Interface.Log("-dfs at " + scheme.GetName(curr));
            LseElectricLink link;
            while (link = curr.DfsNextLink()) {
                if (link.Resistance < LoadResistanceThreshold) {
                    // Interface.Log(LStr.Format("-dfs cond '$0' to '$1'", scheme.GetName(curr.DfsNext), scheme.GetName(link)));
                    curr = curr.DfsPush();
                    curr.Mark = minusMark;
                    break;
                }
                if (link.Resistance < ConductiveResistanceThreshold) {
                    // Interface.Log(LStr.Format("-dfs load '$0' to '$1'", scheme.GetName(curr.DfsNext), scheme.GetName(link)));
                    loads[loads.size()] = link;
                    totalLoadResistance = totalLoadResistance + 1.0 / link.Resistance;
                }
            }

            if (!link) {
                curr = curr.DfsPrevious;
                // Interface.Log("-dfs pop ");
            }
        }