}

    @Test
    public void testLoadJsonResourceWithSubstitution() throws IOException {
        Map<String, String> substitutions = new HashMap<>();
        substitutions.put("${test.placeholder}", "replaced_value");

        // Test loading with substitution - using a resource that exists
        String content = SettingsResourceLoader.loadJsonResource("suggest_indices/suggest_settings.json", substitutions);

    }
  }

  protected final void expectReplacement(Entry<K, V> newEntry) {
    List<Entry<K, V>> expected = copyToList(getSampleElements());
    replaceValue(expected, newEntry);
    expectContents(expected);
  }

  private void replaceValue(List<Entry<K, V>> expected, Entry<K, V> newEntry) {
    for (ListIterator<Entry<K, V>> i = expected.listIterator(); i.hasNext(); ) {

    }
  }

  protected final void expectReplacement(Entry<K, V> newEntry) {
    List<Entry<K, V>> expected = copyToList(getSampleElements());
    replaceValue(expected, newEntry);
    expectContents(expected);
  }

  private void replaceValue(List<Entry<K, V>> expected, Entry<K, V> newEntry) {
    for (ListIterator<Entry<K, V>> i = expected.listIterator(); i.hasNext(); ) {