anchor.diff:        minSizes: const [200, 0],
         axis: Axis.vertical,
         children: [
  -        controller.allocationsFieldsTable,
  +        controller.allocationsFieldsTable!,
           trackerData.createTrackingTable(
             context,
             controller,
  
positive.code: // Use of this source code is governed by a BSD-style license that can be
  // found in the LICENSE file.
  
  // @dart=2.9
  
  import 'dart:math';
  
  
negative.code:     //              at end using addAll().  Also, should not build large list just
      //              up to max needed.
      for (var allocation in controller.monitorAllocations) {
        final knownName = allocation.classRef.name!;
        if (knownName.startsWith(searchingValue)) {
          startMatches.add(knownName);
        } else if (knownName.contains(searchingValue)) {
  