R: ggtree how to show numbers for each node?

Question

[Bio]

Is there a way to add nodelabels to a ggtree plot in R? I want to know what the number for each node is by having it shown on the image of the plot.

Thanks in advance :)

[cpad0112]

Please post either published image or an example synthetic image of what you want. In the mean time, refer to this: https://guangchuangyu.github.io/ggtree-book/chapter-treeio.html#functions-demonstrated and this: https://guangchuangyu.github.io/ggtree-book/chapter-ggtree.html#layouts-of-phylogenetic-tree