code: public static Map<File, Exception> addFolderToClasspath(File folder) throws ReflectiveOperationException {
  		return ReflectionUtil.addFolderToClasspath(folder, jarAndZips);
  	}
docs: Adds all jars and zips in the folder to the classpath
  
  @param folder The folder from which the files to add are
  @return A mapping of the errored files to their corresponding exception.
  @throws ReflectiveOperationException If the system class loader doesn't have an "addUrl" method
  @see ReflectionUtil#addFolderToClasspath(java.io.File, java.io.FileFilter)