`hrbrthemes::geom_textdensity` does not exist

[jmouchnino]

library(hrbrthemes)
data(iris)

ggplot(iris, aes(x = Sepal.Length, colour = Species, label = Species)) +
  geom_textdensity() +
  theme_bw() + guides(color = 'none')

Error in geom_textdensity() : could not find function "geom_textdensity"

https://r-graph-gallery.com/361-density-plot-with-labels-on-lines.html