private void updateRootDirsCombo(@NotNull Map<Module, PsiDirectory[]> psiRootDirs) {
      Module module = (Module)myModuleCombo.getSelectedItem();
      PsiDirectory[] moduleRootDirs = psiRootDirs.getOrDefault(module, PsiDirectory.EMPTY_ARRAY);
      myRootDirCombo.setModel(new DefaultComboBoxModel<>(moduleRootDirs));
    }
private void updateRootDirsCombo(@NotNull Map<Module, PsiDirectory[]> psiRootDirs)