1.79.2 Send methods

identity ->backwards: from=object, to=object

Performs a get-operation on to using the selector identity<-to, followed by a send-operation on from using the send identity<-from.

identity ->create: from=object*, to=object*

Update after instantiation.

identity ->forwards: from=object, to=object

Performs a get-operation on from using the selector identity<-from, followed by a send-operation on to using the send identity<-to.

identity ->initialise: selector1=name, selector2=[name]

Create a relation defining

``Attribute selector1 of `constraint <-from` equals
Attribute selector2 of `constraint <-to`''

If the second selector is not specified is defaults to the first.