This can be used e.g., for Caching, to identify which files have changed.
An optional named list with up to 4 named elements,
See details. NOTE: Experimental feature now allows for multiple
to be specified in a character vector. The modules will be searched for sequentially
in the first
modulePath, then if it doesn't find it, in the second etc.
A named list of character strings specifying the names of modules to be loaded
for the simulation.
Note: the module name should correspond to the R source file from which the module is loaded.
Example: a module named "caribou" will be sourced form the file
located at the specified
modulePath(simList) (see below).