docs: function ContainerMemoryDump(start) {
      tr.model.TimedEvent.call(this, start);
  
      // 'light' or 'detailed' memory dump. See
      // base::trace_event::MemoryDumpLevelOfDetail in the Chromium
      // repository.
      this.levelOfDetail = undefined;
  
      this.memoryAllocatorDumps_ = undefined;
      this.memoryAllocatorDumpsByFullName_ = undefined;
    }