code: protected void addLibraryFiles(String... files) {
          libraryFiles.addAll(Arrays.stream(files)
                  .map(PluginFileDependency::fileInTcMenu)
                  .collect(Collectors.toList())
          );
      }
docs: adds requirements on one or more files that must be copied into the project,
  this is only for files that already exist in tcMenu library, prefer to use the
  other version that takes `PluiginFileDependency`
  @see PluginFileDependency
  @param files the list of library files.