Angular Material: How to clear suggestions?
<pre><code>&lt;md-autocomplete ng-model="ctrl.searchText"
    md-selected-item="ctrl.selectedItem"
    md-selected-item-change="ctrl.selectedItemChange(item)"
    md-search-text="ctrl.searchText"
    md-search-text-change="ctrl.searchTextChange(ctrl.searchText)"
    md-items="item in ctrl.querySearch(ctrl.searchText)"
    md-item-text="item.display"
    md-min-length="0"
    placeholder="Start typing your search term here"&gt;
</code></pre>

<p>I have the above <code>md-autocomplete</code>.</p>

<p>How can I make the suggestions clear on an action? (By clear I mean remove cached result set so that there are no longer any suggestions). Currently my querySearch function is:</p>

<pre><code>function querySearch(query) {
    var results = query ? $this.possibles.filter(createFilterFor(query)) : $this.possibles;
    return results;
}
</code></pre>

<p>My action is setting <code>$this.possibles = null</code> but this still doesn't clear the suggestions. How can we achieve this?</p>