A simulation is a set of references to simulator objects that have been saved to file. The DrawsRef, OutputRef, and EvalsRef objects are organized by model into separate lists.
namea short name identifier. Must be an alphanumeric (but can also have - or _ within
labela longer, human readable label that can have other characters such as spaces, hyphens, etc.
dirname of the directory where directory named "files" exists.
model_refsa list of ModelRef objects
draws_refsa list of lists of DrawsRef objects
output_refsa list of lists of OutputRef objects
evals_refsa list of lists of EvalsRef objects
When a reference ref is added to a simulation sim, ref@dir is changed so that the referenced file is located at file.path(sim@dir, ref@dir).