private static void reportProhibitedAstAccess(VirtualFile vFile) {
    LOG.error("Access to tree elements not allowed for '" + vFile.getPresentableUrl() + "'.\n" +
              "Try using stub-based PSI API to avoid expensive AST loading for files that aren't already opened in the editor.\n" +
              "Consult this method's javadoc for more details.");
  }
private static void reportProhibitedAstAccess(VirtualFile vFile)