I want the symbol to show the picture to rounded corner. In html can set css to the border-radius. While js api is not supported for this customization.
The css for rounded corner image effect should like this: http://jsfiddle.net/YhDXm/1276/
You can use a round image, like this: https://codepen.io/solowt/pen/EbVRMJ?editors=1000#0
S ome images may seem round, but actually have a white (or some other color) background. But you can have images with no background and a centered circle.
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