Is there a shorter/cleaner way to do the null/undefined testing?

```
<select data-bind="options: SelectedBusinessLine() ? SelectedBusinessLine().Clusters() : [],
                               optionsText: 'Title',
                               value: SelectedCluster,
                               optionsCaption: 'Select Cluster..'">
            </select>

```

Instead of 

```
data-bind="options: SelectedBusinessLine() ? SelectedBusinessLine().Clusters() : [],

```

i would like

```
data-bind="options: SelectedBusinessLine().Clusters(),

```

give or take the ()

Or at least a simpler null operator check '??' SelectedBusinessLine ?? []

Or a binding param to auto check for null or silent fail.

Any ideas if this is possible?