try {
            return XContentHelper.toXContent(xContent, mediaType, ToXContent.EMPTY_PARAMS, false).utf8ToString();
        } catch (final IOException e) {
            throw new IORuntimeException(e);
        }
    }

    /**
     * Functional interface for building XContent with custom logic.

import org.lastaflute.di.core.SingletonLaContainer;
import org.opensearch.core.xcontent.ToXContent;
import org.opensearch.core.xcontent.XContentBuilder;

/**
 * OpenSearchAccessResult is an implementation of {@link AccessResult} for OpenSearch.
 *
 * @author shinsuke
 *
 */
public class OpenSearchAccessResult extends AccessResultImpl<String> implements ToXContent {

    /**
     * Creates a new instance of OpenSearchAccessResult.

        assertNotNull(outputStream);
        assertTrue(outputStream instanceof ByteArrayOutputStream);
    }

    public void test_getXContentOutputStream_withException() {
        ToXContent xContent = new ToXContent() {
            @Override
            public XContentBuilder toXContent(XContentBuilder builder, Params params) throws IOException {

 */
package org.codelibs.fess.crawler.entity;

import java.io.IOException;

import org.opensearch.core.xcontent.ToXContent;
import org.opensearch.core.xcontent.XContentBuilder;

/**
 * OpenSearchUrlFilter is an entity for URL filters in OpenSearch.
 */
public class OpenSearchUrlFilter implements ToXContent {

    /**
     * Creates a new instance of OpenSearchUrlFilter.
     */
    public OpenSearchUrlFilter() {

import org.codelibs.fess.util.ComponentUtil;
import org.opensearch.action.admin.cluster.node.stats.NodesStatsResponse;
import org.opensearch.common.xcontent.XContentFactory;
import org.opensearch.core.xcontent.ToXContent;
import org.opensearch.core.xcontent.XContentBuilder;
import org.opensearch.monitor.jvm.JvmStats;
import org.opensearch.monitor.jvm.JvmStats.BufferPool;
import org.opensearch.monitor.jvm.JvmStats.Classes;

import org.codelibs.fess.crawler.exception.OpenSearchAccessException;
import org.opensearch.core.xcontent.ToXContent;
import org.opensearch.core.xcontent.XContentBuilder;

/**
 * OpenSearchAccessResultData is an implementation of {@link AccessResultData} for OpenSearch.
 */
public class OpenSearchAccessResultData extends AccessResultDataImpl<String> implements ToXContent {

    /**
     * Field name for ID.
     */

package org.codelibs.fess.crawler.entity;

import java.io.IOException;

import org.opensearch.core.xcontent.ToXContent;
import org.opensearch.core.xcontent.XContentBuilder;

/**
 * OpenSearchUrlQueue is an implementation of {@link UrlQueue} for OpenSearch.
 */
public class OpenSearchUrlQueue extends UrlQueueImpl<String> implements ToXContent {

    /**
     * Creates a new instance of OpenSearchUrlQueue.
     */

        }

        // Overwrite with new content
        String newContent = "New overwritten content that is longer";
        try (OutputStream out = file.openOutputStream(false)) {
            out.write(newContent.getBytes("UTF-8"));
        }

        // Verify new content
        try (InputStream in = file.getInputStream()) {

			c.Fatalf("import %d: policies mismatch: expected: %v, got: %v", caseNum, content.policies, gotContent.policies)
		}
	}

	if !reflect.DeepEqual(content.ldapUserPolicyMappings, gotContent.ldapUserPolicyMappings) {
		c.Fatalf("import %d: user policy mappings mismatch: expected: %v, got: %v", caseNum, content.ldapUserPolicyMappings, gotContent.ldapUserPolicyMappings)
	}

        String field = "content";

        List<String> results = converter.convert(text, field, "en", "ja");

        assertNotNull(results);
        // With multiple languages, should use ReadingConverterChain
    }

    @Test
    public void testConvertWithEmptyText() throws IOException {
        // Test convert with empty text
        String text = "";
        String field = "content";