Scenario 1

Directed edge creation, boundaries, and origin/destination mapping

Scenario 2

lat/lng to/from cell conversion plus cell boundaries

Scenario 3

Hierarchy navigation between parent, children, center child, and child positions

Scenario 4

Vertex extraction and vertex-to-lat/lng conversions

Scenario 5

Index validation and metadata (resolution, res0 cells, pentagons, totals)

Scenario 6

Compact or uncompact uniformly resolved cell collections

Scenario 7

Grid neighborhood queries (disk, ring, distance, neighbor check, path)

Scenario 8

Fill polygons or geo-interface shapes with cells via H3Shape helpers

Scenario 9

Geo container conversions with LatLngPoly/LatLngMultiPoly and __geo_interface__

Scenario 10

Manual index construction/decomposition with base cell digits