must be of arity >= 2
for hyperedges and of arity == 2
for edges.
(lEdgeCompanion: StringAdd).self
(lEdgeCompanion: StringFormat).self
(lEdgeCompanion: OuterNode[LEdgeCompanion[E]]).toString()
(lEdgeCompanion: ArrowAssoc[LEdgeCompanion[E]]).x
(Since version 2.10.0) Use leftOfArrow
instead
(lEdgeCompanion: Ensuring[LEdgeCompanion[E]]).x
(Since version 2.10.0) Use resultOfEnsuring
instead
Everything common to predefined edge labeled edge companion objects.