Note that @load_generated_functions() is intended to be called as a top-level expression only

See https://probcomp.slack.com/archives/C5T7HNLRY/p1602713555118100?thread_ts=1602701467.114500&cid=C5T7HNLRY

Author: bzinberg

src/Gen.jl

@@ -21,6 +21,10 @@ end
 
 Permit use of generative functions written in the static modeling language up
 to this point. Functions are loaded into the calling module.
+
+This macro is intended to be called as a
+[top-level expression](https://docs.julialang.org/en/v1/manual/modules/)
+only; use in non–top-level scopes may result in incorrect behavior.
 """
 macro load_generated_functions()
     for function_defn in generated_functions