title: Arrow Symbols (Polyline) for AGM(Angular Google Map)
body: <p>In angular 6. I am using flowing code for agm-polyline.
  I want to add Arrow Symbols (Polyline) (<a href="https://developers.google.com/maps/documentation/javascript/examples/overlay-symbol-arrow" rel="nofollow noreferrer">https://developers.google.com/maps/documentation/javascript/examples/overlay-symbol-arrow</a>) in agm-polyline.
  But compiler shows error like Can't bind to 'icon' since it isn't a known property of 'agm-polyline'....</p>
  <pre><code>&lt;agm-polyline [strokeColor]=&quot;color&quot; [icon]=&quot;icon&quot;  &gt;
            &lt;agm-polyline-point  *ngFor=&quot;let marker of markers ; let i=index&quot;  [latitude]=&quot;marker.lat&quot; [longitude]=&quot;marker.lng&quot;&gt;
            &lt;/agm-polyline-point&gt;
      
          &lt;/agm-polyline&gt;
  </code></pre>
  <p>For agm-polyline Arrow Symbols (Polyline) what should I do?</p>