@Override
  public @NotNull Collection<YAMLKeyValue> getKeysValues() {
    final YAMLMapping mapping = PsiTreeUtil.findChildOfType(this, YAMLMapping.class);
    if (mapping == null) {
      return Collections.emptyList();
    }
    else {
      return mapping.getKeyValues();
    }
  }
@Override
  public @NotNull Collection<YAMLKeyValue> getKeysValues()