ErrNotFound is returned when a link or edge lookup fails.

ErrUnknownEdgeLinks is returned when attempting to create an edge with an invalid source and/or destination ID.

Edge describes a graph edge that originates from Src and terminates at Dst.

Link encapsulates all information about a link discovered by the Links 'R' Us crawler.

EdgeIterator is implemented by objects that can iterate the graph edges.

Graph is implemented by objects that can mutate or query a link graph.

Iterator is implemented by graph objects that can be iterated.

LinkIterator is implemented by objects that can iterate the graph links.