}
            return null;
        }
        return permission;
    }

    /**
     * Decodes a search role format string back to a permission string.
     * Reverses the encoding process to restore original permission format.
     *
     * @param value the encoded permission string to decode
     * @return the decoded permission string, or null if the input is blank or invalid
     */

import org.lastaflute.web.response.HtmlResponse;
import org.lastaflute.web.response.StreamResponse;
import org.lastaflute.web.ruts.multipart.MultipartFormFile;
import org.lastaflute.web.ruts.process.ActionRuntime;

/**
 * Admin action for Storage management.
 *
 */
public class AdminStorageAction extends FessAdminAction {

    /**
     * Default constructor.
     */

            }
            results[i] = itemResponse.isFailed() ? 0 : 1;
        }
        return results;
    }

    // to suppress xacceptUpdateColumnModifiedPropertiesIfNeeds()'s specify process
    @Override
    protected UpdateOption<CB> createPlainUpdateOption() {
        UpdateOption<CB> updateOption = new UpdateOption<CB>();
        updateOption.xtoBeCompatibleBatchUpdateDefaultEveryColumn();

import org.dbflute.optional.OptionalThing;
import org.lastaflute.taglib.function.LaFunctions;
import org.lastaflute.web.response.ActionResponse;
import org.lastaflute.web.response.StreamResponse;
import org.lastaflute.web.ruts.process.ActionRuntime;
import org.lastaflute.web.util.LaRequestUtil;
import org.lastaflute.web.util.LaServletContextUtil;
import org.opensearch.core.common.text.Text;
import org.opensearch.search.fetch.subphase.highlight.HighlightField;

- **System Properties** (`system.properties`) - System configuration

**Usage**:
1. Navigate to **System > Backup**
2. Click **Upload** button
3. Select file (auto-detects format)
4. Click **Import** to process

### 2. REST API Import

#### Bulk Document API

**Endpoint**: `PUT /api/admin/documents/bulk`

**Format**: NDJSON (Newline-Delimited JSON)

**Example**:
```bash
# Create NDJSON file

     * documents without loading them all into memory at once.
     *
     * @param params The search request parameters
     * @param cursor Function to process each document in the result set
     * @param userBean Optional user information for permission checking
     * @return Total number of documents processed
     */

            return new OpenIdConnectCredential(attributes);
        } catch (final IOException e) {
            if (logger.isDebugEnabled()) {
                logger.debug("Failed to process callback request.", e);
            }
        }
        return null;
    }

    /**
     * Parses the JWT claim and extracts attributes.
     *
     * @param jwtClaim the JWT claim string

import org.dbflute.optional.OptionalThing;
import org.lastaflute.web.Execute;
import org.lastaflute.web.response.HtmlResponse;
import org.lastaflute.web.response.render.RenderData;
import org.lastaflute.web.ruts.process.ActionRuntime;
import org.lastaflute.web.validation.VaErrorHook;
import org.lastaflute.web.validation.VaMessenger;

import jakarta.annotation.Resource;

/**
 * Admin action for User management.
 *
 */

import org.junit.jupiter.api.Test;
import org.junit.jupiter.api.TestInfo;
import org.lastaflute.web.response.ActionResponse;
import org.lastaflute.web.response.HtmlResponse;
import org.lastaflute.web.ruts.process.ActionRuntime;

public class FessAdminActionTest extends UnitFessTestCase {

    private Path tempDir;
    private Path varDir;
    private Path webappDir;
    private Path confDir;

    @Override

        assertEquals("jpg", extensions[0]);
        assertEquals("jpeg", extensions[1]);
        assertEquals("gif", extensions[2]);
        assertEquals("png", extensions[3]);
    }
    */

    // Test crawler process limit
    @Test
    public void test_getCrawlerProcessLimit() {
        assertEquals(3, fessConfig.getJobMaxCrawlerProcessesAsInteger().intValue());
    }

    // Test log output length limit
    @Test