Resolving-the-file-path-to-a-results-file-of-a-simulation.md

+As long as the workflow model has a method or attribute `staged_dir` defined, which should return the path to the staged directory, you just add the relative path to this location. Using ContainerFillSim as an example, I could do this:
+
+```ruby
+Pathname.new(@container.staged_dir).join("movies/filling.gif")
+```
+
+Or I could add this method to `Container`:
+
+```ruby
+# @return [Pathname] file path to the 
+def results_file_path(relpath)
+  Pathname.new(@container.staged_dir).join(relpath)
+end
+
+# then you can do
+@container.results_file_path("movies/filling.gif")
+```