sinterface IResourceLoader {
  S loadSnippet(S snippetID);
  S getTranspiled(S snippetID); // with libs
  int getSnippetType(S snippetID);
  S getSnippetTitle(S snippetID);
  File loadLibrary(S snippetID);
  
  ifndef NoJavaXJar
  public default File pathToJavaXJar() { ret pathToJavaxJar_noResourceLoader(); }
  endifndef

  // may return null, then caller compiles themselves
  default File getSnippetJar(S snippetID, S transpiledSrc) { null; }
}