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