OptionallabelRestrict to a single label, i.e. a hasLabel(label) step.
OptionalhasEquality filters, one has(key, value) step per entry. All entries
are ANDed together (Gremlin's default has() chaining behavior).
For anything beyond flat equality (ranges, P.within, regex, OR
logic), use traversal() directly.
OptionallimitCaps the number of results, i.e. a limit(n) step.
Filters shared by
findVertices()/findEdges().