an option for whether the random
graph should be undirected (default) or directed.
graph_name
an optional string for labeling
the graph object.
display_labels
display node labels.
set_seed
supplying a value sets a random seed
of the Mersenne-Twister implementation.
write_backups
an option to write incremental
backups of changing graph states to disk. If
TRUE, a subdirectory of the working directory
will be used to store RDS files. The
default value is FALSE so one has to opt in
to use this functionality.