Neighborhood filtering/selection in Tidygraph

[snystrom]

I'm having some trouble groking certain Tidygraph operations that are relatively straightforward in igraph.

In particular I would like to analyze specific neighborhoods at different orders. I think I need to use Morphs for this, but I just haven't got it working.

For example, say I have the following network structure:

I want to analyze the neighborhood about x.

library(tidygraph)
library(ggraph)

net <- tibble::tibble(A = letters[1:6],
               B = rep(c("x", "y"), each = 3)) %>% 
  tidygraph::as_tbl_graph()

net %>% 
  ggraph(layout = "nicely") +
    geom_edge_link() +
    geom_node_point(size = 10, fill = "white", shape = 21) +
    geom_node_text(aes(label = name)) +
    theme_graph()

the iGraph implementation works as follows

Extract the neighborhood of node x.

v <- net %>% 
  tidygraph::as.igraph() %>% 
  igraph::neighborhood(nodes = "x", order = 1)

build a subgraph by unlisting the igraph.vs object

igraph::induced_subgraph(net, vids = unlist(v)) %>% 
  tidygraph::as_tbl_graph() %>% 
  ggraph(layout = "nicely") +
    geom_edge_link() +
    geom_node_point(size = 10, fill = "white", shape = 21) +
    geom_node_text(aes(label = name)) +
    theme_graph()

How do I do this with tidygraph? Morphs?