@Override
    public void visitClass(@NotNull PsiClass aClass) {
      if (aClass instanceof PsiTypeParameter) {
        return;
      }
      int numLoggers = 0;
      for (PsiField field : aClass.getFields()) {
        if (isLogger(field)) {
          numLoggers++;
        }
      }
      if (numLoggers <= 1) {
        return;
      }
      registerClassError(aClass);
    }
@Override
    public void visitClass(@NotNull PsiClass aClass)