static Set<S> collectSnippetIDsInTranspiledSnippet(S snippetID) {
  if (isImageSnippetID(snippetID)) ret new Set;
  int type = getSnippetType(snippetID);
  if (!isJavaxCompilableSnippetTypeExceptInclude(type))
    ret new Set;
  S src = getServerTranspiled2(snippetID);
  //Set<S> set = collectSnippetIDsInText(src);
  Set<S> set = collectSnippetIDsInJavaSource(dropFirstLine(src)); // skip comments
  LS libs = map fsI(regexpAll("[0-9]+", firstLine(src));
  print("Libs for " + snippetID + ": " + libs);
  addAll(set, libs);
  ret set;
}