ReadonlycolumnsReadonlyparametersReadonlypathThe path the lambda calls it by, e.g. sales::ordersAbove
Optional ReadonlyproblemWhy it can't be added, e.g. a parameter Cube can't take a value for
Optional ReadonlyruntimeThe runtime it reads through, as its body's from() names it, directly
or through a function it calls; none when it leaves the runtime to its
caller
ReadonlysignatureThe engine's full name, e.g. sales::ordersAbove_Float_1__Relation_1_
A function of a model that returns a relation (PLAN §6.5), as plain data