hasEdge abstract method
Determine if there is a value link between 2 nodes
(Optional) Only if it matches any of anyTags
and matches all items in allTags
Implementation
bool hasEdge(a, b, key, {List anyTags, List allTags});
Determine if there is a value link between 2 nodes
(Optional) Only if it matches any of anyTags
and matches all items in allTags
bool hasEdge(a, b, key, {List anyTags, List allTags});