example of nested mdl-repeat using outer scope

[jonreyna]

Is there an example of mdl-repeat anywhere, that uses a variable from the outer scope's variable, to iterate?

<div class="mdl-accordion-group" id="accordionGroup" mdl-repeat="element in elements">
   <template>
      <div>
         <div class="mdl-accordion mdl-js-accordion mdl-js-ripple-effect">
            <label class="mdl-accordion__label">
            <i class="material-icons indicator">loop</i>
            <label class="mdl-accordion__label">{{element.hostname}}</label>
            <label class="mdl-accordion__label">{{element.loopbackip}}</label>
            <label class="mdl-accordion__label">{{element.chassis.createdAt}}</label>
            </label>
            <div class="mdl-accordion--content">
               <h5 class="mdl-accordion--header">Header</h5>
               <table class="mdl-data-table mdl-data-table--selectable mdl-shadow--2dp">
                  <thead>
                     <tr>
                        <!-- Chassis -->
                        <th class="mdl-data-table__cell--non-numeric">Chassis Name</th>
                        <th class="mdl-data-table__cell--non-numeric">Chassis Description</th>
                        <th class="mdl-data-table__cell--non-numeric">Chasiss S/N</th>
                        <!-- Module -->
                        <th class="mdl-data-table__cell--non-numeric">Module Name</th>
                        <th class="mdl-data-table__cell--non-numeric">Module Description</th>
                        <th class="mdl-data-table__cell--non-numeric">Module Version</th>
                        <th class="mdl-data-table__cell--non-numeric">Module P/N</th>
                        <th class="mdl-data-table__cell--non-numeric">Module S/N</th>
                        <th class="mdl-data-table__cell--non-numeric">Module M/N</th>
                        <th class="mdl-data-table__cell--non-numeric">Module Clei</th>
                  </thead>
                  <tbody>
                     <tr>
                        <td class="mdl-data-table__cell--non-numeric">{{element.chassis.name}}</td>
                        <td>{{element.chassis.description}}</td>
                        <td>{{element.chassis.serialNumber}}</td>
                     </tr>
                     <tr mdl-repeat="module in element.chassis.modules">
                        <td class="mdl-data-table__cell--non-numeric">{{element.chassis.name}}</td>
                        <td>{{element.chassis.description}}</td>
                        <td>{{element.chassis.serialNumber}}</td>
                        <td>{{module.name}}</td>
                        <td>{{module.description}}</td>
                        <td>{{module.version}}</td>
                        <td>{{module.partNumber}}</td>
                        <td>{{module.serialNumber}}</td>
                        <td>{{module.modelNumber}}</td>
                        <td>{{module.cleiCode}}</td>
                     </tr>
                  </tbody>
               </table>
            </div>
         </div>
      </div>
   </template>
</div>

In this case, modules is a List member variable of chassis.

@MdlComponentModel
@Entity()
class Chassis {
  int id;
  String name, serialNumber, description, createdAt;
  List<Module> modules;
}

@MdlComponentModel
@Entity()
class Module {
  String name = "", version, partNumber, serialNumber, description, cleiCode,
      modelNumber;
  List<SubModule> subModules;
  List<ReDIMM> reDIMMs;
  List<ReUSB> reUSBs;
  List<ReDisk> reDisks;
}

@MdlComponentModel
@Entity()
class Element {
  int id;
  String hostname, location, loopbackip, rackLocation, type;
  Hub hub;
  Chassis chassis;
}

Dartium spits out a stack trace that it can't find module though.

Uncaught Unhandled exception:
Value was missing for variable tag: module.name. (1:2959)
...ent.chassis.serialNumber}}</td> <td>{{module.name}}</td> <td>{{module.de...
                                       ^

#0      Renderer.visitVariable (package:mustache/src/renderer.dart:99:21)
#1      VariableNode.accept (package:mustache/src/node.dart:45:43)
#2      Renderer.render.<anonymous closure> (package:mustache/src/renderer.dart:58:30)
#3      List.forEach (dart:core-patch/growable_array.dart:258)
#4      Renderer.render (package:mustache/src/renderer.dart:58:13)
#5      Template.render (package:mustache/src/template.dart:40:14)
#6      Template.renderString (package:mustache/src/template.dart:33:5)
#7      MaterialRepeat.add.<add_async_body> (package:mdl/src/template/components/MaterialRepeat.dart:122:31)
#8      Future.Future.microtask.<anonymous closure> (dart:async/future.dart:144)
#9      _microtaskLoop (dart:async/schedule_microtask.dart:41)
#10     _startMicrotaskLoop (dart:async/schedule_microtask.dart:50)
#11     _ScheduleImmediateHelper._handleMutation (dart:html:49308)

Here's my pubspec.yaml.

environment:
  sdk: '>=1.0.0 <2.0.0'

dependencies:
  browser: any

  logging: any
  logging_handlers: any
  console_log_handler: any

  dart_to_js_script_rewriter: ^0.1.0
  analyzer: any
  dartson: any

  mdl: "^1.17.6"
  di: "^3.3.0"

transformers:
  - di
  - dart_to_js_script_rewriter
  - dartson
  - mdl
  - $dart2js:
      commandLineOptions: [--enable-experimental-mirrors]

Is it possible to do this with mdl-repeat? If so, I could use some help.