[NS B05] Remove old dead code

        }

    }

    // TODO : remove this when it's useless

    @NonNull private NetworkReassignment computeInitialReassignment() {

        final NetworkReassignment change = new NetworkReassignment();

        for (NetworkRequestInfo nri : mNetworkRequests.values()) {

            change.addRequestReassignment(new NetworkReassignment.RequestReassignment(nri,

                    nri.mSatisfier, nri.mSatisfier));

        }

        return change;

    }

    private void computeRequestReassignmentForNetwork(@NonNull final NetworkReassignment changes,

            @NonNull final NetworkAgentInfo newNetwork) {

        final int score = newNetwork.getCurrentScore();

        for (NetworkRequestInfo nri : mNetworkRequests.values()) {

            // Process requests in the first pass and listens in the second pass. This allows us to

            // change a network's capabilities depending on which requests it has. This is only

            // correct if the change in capabilities doesn't affect whether the network satisfies

            // requests or not, and doesn't affect the network's score.

            if (nri.request.isListen()) continue;

            // The reassignment has been seeded with the initial assignment, therefore

            // getReassignment can't be null and mNewNetwork is only null if there was no

            // satisfier in the first place or there was an explicit reassignment to null.

            final NetworkAgentInfo currentNetwork = changes.getReassignment(nri).mNewNetwork;

            final boolean satisfies = newNetwork.satisfies(nri.request);

            if (newNetwork == currentNetwork && satisfies) continue;

            // check if it satisfies the NetworkCapabilities

            if (VDBG) log("  checking if request is satisfied: " + nri.request);

            if (satisfies) {

                // next check if it's better than any current network we're using for

                // this request

                if (VDBG || DDBG) {

                    log("currentScore = "

                            + (currentNetwork != null ? currentNetwork.getCurrentScore() : 0)

                            + ", newScore = " + score);

                }

                if (currentNetwork == null || currentNetwork.getCurrentScore() < score) {

                    changes.addRequestReassignment(new NetworkReassignment.RequestReassignment(

                            nri, currentNetwork, newNetwork));

                }

            } else if (newNetwork == currentNetwork) {

                changes.addRequestReassignment(new NetworkReassignment.RequestReassignment(

                        nri, currentNetwork, null));

            }

        }

    }

    // Handles a network appearing or improving its score.

    //

    // - Evaluates all current NetworkRequests that can be

    //   satisfied by newNetwork, and reassigns to newNetwork

    //   any such requests for which newNetwork is the best.

    //

    // - Writes into the passed reassignment object all changes that should be done for

    //   rematching this network with all requests, to be applied later.

    //

    // TODO : stop writing to the passed reassignment. This is temporarily more useful, but

    // it's unidiomatic Java and it's hard to read.

    //

    // @param changes a currently-building list of changes to write to

    // @param newNetwork is the network to be matched against NetworkRequests.

    // @param now the time the rematch starts, as returned by SystemClock.elapsedRealtime();

    private void rematchNetworkAndRequests(@NonNull final NetworkReassignment changes,

            @NonNull final NetworkAgentInfo newNetwork) {

        if (!newNetwork.everConnected) return;

        changes.addRematchedNetwork(new NetworkReassignment.NetworkBgStatePair(newNetwork,

                newNetwork.isBackgroundNetwork()));

        if (VDBG || DDBG) log("rematching " + newNetwork.toShortString());

        computeRequestReassignmentForNetwork(changes, newNetwork);

    }

    private void updateSatisfiersForRematchRequest(@NonNull final NetworkRequestInfo nri,

            @Nullable final NetworkAgentInfo previousSatisfier,

            @Nullable final NetworkAgentInfo newSatisfier,