sbool isMarkedAsSrcLib(S snippetID) {
  ifndef NoResourceLoader
  IResourceLoader rl = vm_getResourceLoader();
  if (rl != null)
    ret isJavaxCompilableSnippetType(rl.getSnippetType(id));
  endifndef
  
  ret snippetID != null && fileExists(javaxCodeDir("srclibs/" + psI(snippetID));
}