code: ConfigurationModule addNamesTo(final ConfigurationModule input, final OptionalParameter<String> field) {
      ConfigurationModule result = input;
      for (final String fileName : this.fileNames()) {
        result = result.set(field, fileName);
      }
      return result;
    }
docs: Adds the file names of this FileSet to the given field of the given ConfigurationModule.
  
  @param input the ConfigurationModule to fill out
  @param field the field to add the files in this set to.
  @return the filled out ConfigurationModule