Field field = findField(target.getClass(), fieldName);
        field.setAccessible(true);
        field.set(target, value);
    }

    private Field findField(Class<?> clazz, String fieldName) {
        while (clazz != null) {
            try {
                return clazz.getDeclaredField(fieldName);

         *
         * @param source    The source value
         * @param fieldName A description of the field being interpolated. The implementation may use this to
         *                  log stuff.
         * @return The interpolated value.
         */
        String transform(String source, String fieldName);
    }

         *
         * @param source The source value
         * @param fieldName A description of the field being interpolated. The implementation may use this to
         *         log stuff.
         * @return The interpolated value.
         */
        String transform(String source, String fieldName);
    }

    /**
     * Find field using cache for improved performance.
     */
    private Field findCachedField(Class<?> beanType, String fieldName) {
        Map<String, Field> classFieldCache = FIELD_CACHE.computeIfAbsent(beanType, this::buildFieldCache);
        return classFieldCache.get(fieldName);
    }

    /**
     * Build field cache for a class.
     */
    private Map<String, Field> buildFieldCache(Class<?> beanType) {

         * @param source The source value
         * @param fieldName A description of the field being interpolated. The implementation may use this to
         *                           log stuff.
         * @return The interpolated value.
         */
        String transform(String source, String fieldName);
    }

        while (jsonParser.nextToken() != JsonToken.END_OBJECT) {
            final String fieldName = jsonParser.getCurrentName();
            if (fieldName != null) {
                jsonParser.nextToken(); // Move to the value of the current field

                if (jsonParser.getCurrentToken() == JsonToken.START_ARRAY) {
                    nestedMap.put(fieldName, parseArray(jsonParser));

         *
         * @param source    The source value
         * @param fieldName A description of the field being interpolated. The implementation may use this to
         *                  log stuff.
         * @return the interpolated value
         */
        String transform(String source, String fieldName);
    }

    @Nonnull
    static XmlReaderRequestBuilder builder() {

    /** The analyzer settings type field. */
    public static final String ANALYZER_SETTINGS_TYPE = "settingsType";
    /** The analyzer settings field name. */
    public static final String ANALYZER_SETTINGS_FIELD_NAME = "fieldName";
    /** The reading analyzer settings field. */
    public static final String ANALYZER_SETTINGS_READING_ANALYZER = "readingAnalyzer";
    /** The reading term analyzer settings field. */

         * @param source The source value
         * @param fieldName A description of the field being interpolated. The implementation may use this to
         *                           log stuff.
         * @return The interpolated value.
         */
        String transform(String source, String fieldName);
    }

          "type": "keyword"
        },
        "match": "*",
        "match_mapping_type": "string"
      }
    }
  ],
  "properties": {
    "settingsType": {
      "type": "keyword"
    },
    "fieldName": {
      "type": "keyword"
    },
    "readingAnalyzer": {
      "type": "keyword"
    },
    "readingTermAnalyzer": {
      "type": "keyword"
    },
    "normalizeAnalyzer": {
      "type": "keyword"