title: How to show angular material auto-complete all items even one item is selected?
body: <p>Angular material default functionality is when user selects  one item from auto-completion list remaining items are not showing.</p>
  
  <p>Eg: When I click on the control it's showing like this
  <a href="https://i.stack.imgur.com/U8awO.jpg" rel="nofollow noreferrer"><img src="https://i.stack.imgur.com/U8awO.jpg" alt="enter image description here"></a></p>
  
  <p>After one item selected it is not showing remaining list.</p>
  
  <p><a href="https://i.stack.imgur.com/6oX2i.jpg" rel="nofollow noreferrer"><img src="https://i.stack.imgur.com/6oX2i.jpg" alt="enter image description here"></a></p>
  
  <p>Here I wanna show all auto-complete items even user selects one items from the list.</p>
  
  <p>Is this possible with angular material? If yes could you please help how can we achieve this.</p>
  
  <p>I need output like this(Below image I edited in paint).</p>
  
  <p><a href="https://i.stack.imgur.com/63Kpo.jpg" rel="nofollow noreferrer"><img src="https://i.stack.imgur.com/63Kpo.jpg" alt="enter image description here"></a></p>