@restartableTask
  *debounceColumnWidths() {
    yield timeout(100);
    this.resizableColumns.setTableWidth(this.getTableWidth());
  }
Restartable `ember-concurrency` task called whenever
the table widths need to be recalculated due to some
resizing of the window or application.

@property debounceColumnWidths
@type {Object} Ember Concurrency task