void (@NotNull List<SyntheticLibrary> list, @NotNull List<VirtualFile> contentRoots, @Nullable String id) { if (contentRoots.isEmpty()) return; if (id == null) { list.add(SyntheticLibrary.newImmutableLibrary(contentRoots)); } else { list.add(SyntheticLibrary.newImmutableLibrary(id, contentRoots, Collections.emptyList(), Collections.emptySet(), null)); } }