// add latest include
static S addStdClass() {
  loading {
    ret addStdClass(findLatestInclude().id, true);
  }
}

static S addStdClass(bool realEdit) {
  ret addStdClass(findLatestInclude().id, realEdit);
}

static S addStdClass(S snippetID, bool realEdit) {
  loading {
    snippetID = fsI(snippetID);
    LS tok = javaTokSnippet(snippetID);
    L<S> names = map getClassDeclarationName(allClasses(tok));
    addAll(names, keys(tok_findRewrites(tok)));
    printStructure("Classes defined in " + snippetID + ": ", names);
    if (empty(names)) ret "No classes found in " + snippetID;
    S name = first(names);
    
    S text = loadSnippet(#1003674);
    SS map = standardClassesMap_uncached();
    S def = map.get(name);
    S result = "";
    if (def == null) {
      print(result = "Defining " + name + ".");
      
      S newText = addToStdClassesList(text, name, snippetID);
      print();
      print(unidiff(text, newText));
      if (!realEdit)
        print(result += " Not editing (test mode).");
      else {
        editSnippet(#1003674, newText);
        triggerTranspilerDirty();
        print(result += " Edited #1003674. Now " + countLines(newText) + " lines - " + n2(l(map)+1, "total class", "total classes") + "!");
      }
    } else {
      print(result = "Class " + name + " already defined as " + def);
      if (sameSnippetID(def, snippetID))
        print("Exiting.");
      else
        print("Will not redefine as " + snippetID + ".");
    }
    ret result;
  }
}

Began life as a copy of #1003201