It is a subclass of RootDepSet.
It creates an object with two empty slots $value for the collection of subsets
and $root for the roots
associated to each of the subsets in $value.
An object of class Set contains a collection of subsets on the
vertex set and it is used in some of the estimation methods.
Usage
Set()
Arguments
Value
An object with two empty slots $value for the collection of subsets and $root for the roots.