When an envir argument is present and resolves to a variable with a tracked environment
state (set up by new.env() + assign(..., envir=...)), the lookup is performed inside
that environment so that the correct definition is found and the returned DataflowInformation
contains the right read edges.
Processes a built-in 'get' function call.
When an
envirargument is present and resolves to a variable with a tracked environment state (set up bynew.env()+assign(..., envir=...)), the lookup is performed inside that environment so that the correct definition is found and the returned DataflowInformation contains the right read edges.