select_last_nodes_created(graph)

# Create a graph and add 4 nodes
# in 2 separate function calls
graph <-
  create_graph() %>%
  add_n_nodes(
    n = 2,
    type = "a",
    label = c("a_1", "a_2")) %>%
  add_n_nodes(
    n = 2,
    type = "b",
    label = c("b_1", "b_2"))

# Select the last nodes created (2 nodes
# from the last function call) and then
# set their color to be `red`
graph <-
  graph %>%
  select_last_nodes_created() %>%
  set_node_attrs_ws(
    node_attr = color,
    value = "red") %>%
  clear_selection()

# Display the graph's internal node
# data frame to verify the change
graph %>% get_node_df()