Get the set of all nodes not neighboring a single graph node.

## Arguments

- graph
A graph object of class

`dgr_graph`

.- node
A single-length vector containing a node ID value.

## Examples

```
# Create a simple, directed graph with 5
# nodes and 4 edges
graph <-
create_graph() %>%
add_path(n = 5)
# Find all non-neighbors of node `2`
graph %>% get_non_nbrs(node = 2)
#> [1] 4 5
```