hasLink abstract method
Determine if there is an link between 2 nodes, No matter what direction
(Optional) Only if it matches any of anyTags
and matches all items in allTags
Implementation
bool hasLink(a, b, {List anyTags, List allTags});
Determine if there is an link between 2 nodes, No matter what direction
(Optional) Only if it matches any of anyTags
and matches all items in allTags
bool hasLink(a, b, {List anyTags, List allTags});