getH3UnidirectionalEdge method
Get an H3 index representing a unidirectional edge for a given origin and destination
Returns 0 when result can't be calculated
Implementation
@override
BigInt getH3UnidirectionalEdge(BigInt origin, BigInt destination) {
return _h3c
.getH3UnidirectionalEdge(origin.toInt(), destination.toInt())
.toBigInt();
}