(elementSymbol: StringAdd).self
(elementSymbol: StringFormat).self
(elementSymbol: ArrowAssoc[ElementSymbol]).x
(Since version 2.10.0) Use leftOfArrow
instead
(elementSymbol: Ensuring[ElementSymbol]).x
(Since version 2.10.0) Use resultOfEnsuring
instead
An element of a ProductNode (using a 1-based index)