*/
    String getIndexFieldBoost();

    /**
     * Get the value for the key 'index.field.created'. <br>
     * The value is, e.g. created <br>
     * comment: Field name for creation date in the index.
     * @return The value of found property. (NotNull: if not found, exception but basically no way)
     */
    String getIndexFieldCreated();

    /**

\n  clear: both;\n  font-weight: $font-weight-normal;\n  color: $dropdown-link-color;\n  text-align: inherit; // For `<button>`s\n  text-decoration: if($link-decoration == none, null, none);\n  white-space: nowrap; // prevent links from randomly breaking onto new lines\n  background-color: transparent; // For `<button>`s\n  border: 0; // For `<button>`s\n\n  // Prevent dropdown overflow if there's no padding\n  // See https://github.com/twbs/bootstrap/pull/27703\n  @if $dropdown-padding-y == 0 {\n...