The marker is based on Material Design (Apache 2.0 License): https://material.io/
icon_marker()
SVG code for a map marker.
icon_marker()
#> [1] "<g transform=\"translate(-12,-22)\">\n <path d=\"M12 2C8.13 2 5 5.13 5 9c0 5.25 7 13 7 13s7-7.75 7-13c0-3.87-3.13-7-7-7zm0 9.5c-1.38 0-2.5-1.12-2.5-2.5s1.12-2.5 2.5-2.5 2.5 1.12 2.5 2.5-1.12 2.5-2.5 2.5z\"/>\n </g>"