* @return the merged XML node, or null if both inputs are null
     */
    protected abstract XmlNode doMerge(XmlNode dominant, XmlNode recessive, Boolean childMergeOverride);

    /**
     * Gets the singleton instance of the XmlService.
     *
     * @return the XmlService instance
     * @throws IllegalStateException if no implementation is found
     */
    private static XmlService getService() {

            return searchWithMainSearcher(availableSearchers[0], query, params, userBean);
        }
        return searchWithMultipleSearchers(availableSearchers, query, params, userBean);
    }

    /**
     * Gets the array of available searchers based on configuration.
     * Filters the searchers array to include only those specified in the available searcher name set.
     * If no specific searchers are configured, returns all searchers.

    change.
-   You make the change and submit it for the review again.
-   This cycle repeats itself until the PR gets approved.
-   Note: As a friendly reminder, we may reach out to you if the PR is awaiting
    your response for more than 2 weeks.

**4. Approved**

-   Once the PR is approved, it gets `kokoro:force-run` label applied and it
    initiates CI/CD tests.
-   We can't move forward if these tests fail.

        do {
            try {
                send(request, response, config.getNetbiosRetryTimeout());
            } catch (final InterruptedIOException ioe) {
                // second query thread to finish gets interrupted so this is expected
                if (log.isTraceEnabled()) {
                    log.trace("Failed to send nameservice request for " + name.name, ioe);
                }

                }
                start = (pageNumber - 1) * form.getPageSize();
            }
        }
        form.start = start;

        return doSearch(form);
    }

    /**
     * Gets the display query.
     * @param form The search form.
     * @param labelTypeItems The list of label type items.
     * @return The display query.
     */

                    }
                } catch (final IOException e) {
                    throw new CrawlerSystemException(e);
                }
            }
        }

        /**
         * Gets the captured output as a single string.
         * @return The captured output with newlines.
         */
        public String getOutput() {
            final StringBuilder buf = new StringBuilder(100);

     * @param acceptedRoles array of role names that can access the API
     */
    public void setAcceptedRoles(final String[] acceptedRoles) {
        this.acceptedRoles = acceptedRoles;
    }

    /**
     * Gets the server path with access token for API requests.
     *
     * @return the complete server path including the access token
     * @throws FessSystemException if no access token is available
     */

 * Given a request and cached response, this figures out whether to use the network, the cache, or
 * both.
 *
 * Selecting a cache strategy may add conditions to the request (like the "If-Modified-Since" header
 * for conditional GETs) or warnings to the cached response (if the cached data is potentially
 * stale).
 */
class CacheStrategy internal constructor(
  /** The request to send on the network, or null if this call doesn't use the network. */

       * Returns an input stream containing one or more certificate PEM files. This implementation just
       * embeds the PEM files in Java strings; most applications will instead read this from a resource
       * file that gets bundled with the application.
       */
      private fun trustedCertificatesInputStream(): InputStream {
        ... // Full source omitted. See sample.
      }

                } else {
                    sb.append(ch);
                }
            }
            return sb.toString();
        }
        return s;
    }

    /**
     * Gets the simple name of this dictionary file.
     * @return the simple name of the file
     */
    public String getSimpleName() {
        return new File(path).getName();
    }

    /**