Set of C++ methods
Class "envRefClass", directly.
Class ".environment", by class "envRefClass", distance 2.
Class "refClass", by class "envRefClass", distance 2.
Class "environment", by class "envRefClass", distance 3, with explicit coerce.
Class "refObject", by class "envRefClass", distance 3.
pointer:Object of class externalptr pointer to the internal structure that represents the set of methods
class_pointer:Object of class externalptr pointer to the internal structure that models the related class