import org.lastaflute.web.validation.exception.ValidationErrorException;

/**
 * Admin action for Plugin management.
 * This class provides functionality for installing, deleting, and managing plugins in the Fess system.
 *
 */
public class AdminPluginAction extends FessAdminAction {

    /**
     * Default constructor.
     */
    public AdminPluginAction() {
        super();
    }

    assertThrows(IOException.class, () -> failSource.copyTo(new TestCharSink()));
    assertTrue(failSource.wasStreamClosed());
  }

  public void testClosesOnErrors_copyingToWriterThatThrows() {
    TestCharSource okSource = new TestCharSource(STRING);
    assertThrows(IOException.class, () -> okSource.copyTo(new TestWriter(WRITE_THROWS)));
    assertTrue(okSource.wasStreamClosed());

import org.junit.After;
import org.junit.Before;
import org.junit.Rule;
import org.junit.Test;
import org.junit.rules.ExpectedException;

/**
 * @author higa
 *
 */
public class ArrayMapTest {

    /**
     * @see org.junit.rules.ExpectedException
     */
    @Rule
    public ExpectedException exception = ExpectedException.none();

    ArrayMap<String, String> map;

    /**

...`description` フィールドは **必須ではありません**。デフォルト値が `None` だからです。

### ドキュメントでの入力モデル { #input-model-in-docs }

ドキュメントで確認すると、`description` フィールドには **赤いアスタリスク** が付いておらず、必須としてはマークされていません:

<div class="screenshot">
<img src="/img/tutorial/separate-openapi-schemas/image01.png">
</div>

### 出力用モデル { #model-for-output }

しかし同じモデルを次のように出力として使う場合:

import org.codelibs.fess.util.ComponentUtil;
import org.dbflute.optional.OptionalThing;
import org.lastaflute.web.Execute;
import org.lastaflute.web.response.HtmlResponse;

/**
 * The logout action.
 */
public class LogoutAction extends FessSearchAction {

    /**
     * Default constructor.
     */
    public LogoutAction() {
        super();
    }

/**
 * Form class for editing Kuromoji dictionary entries in the admin interface.
 * This form extends CreateForm to include fields necessary for updating existing Kuromoji dictionary entries.
 * Kuromoji is a Japanese morphological analyzer, and this dictionary manages custom tokenization rules.
 */
public class EditForm extends CreateForm {

    /**

import org.codelibs.core.lang.ThreadUtil;

/**
 * The abstract helper for configuration.
 *
 * This class provides a basic framework for managing configurations that can be reloaded.
 * It includes functionality for updating configurations in a separate thread and controlling the reloading interval.
 */
public abstract class AbstractConfigHelper {

    /**
     * Default constructor.
     */
    public AbstractConfigHelper() {

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

import org.codelibs.fess.unit.UnitFessTestCase;
import org.junit.jupiter.api.Test;
import org.junit.jupiter.api.TestInfo;

public class FessStandardTransformerTest extends UnitFessTestCase {

    @Override
    protected void setUp(TestInfo testInfo) throws Exception {
        super.setUp(testInfo);
    }

    @Override

 */
package org.codelibs.fess.dict.mapping;

import org.codelibs.fess.unit.UnitFessTestCase;
import org.junit.jupiter.api.Test;
import org.junit.jupiter.api.TestInfo;

public class CharMappingCreatorTest extends UnitFessTestCase {

    @Override
    protected void setUp(TestInfo testInfo) throws Exception {
        super.setUp(testInfo);
    }

    @Override

 */
package org.codelibs.fess.dict.protwords;

import org.codelibs.fess.unit.UnitFessTestCase;
import org.junit.jupiter.api.Test;
import org.junit.jupiter.api.TestInfo;

public class ProtwordsCreatorTest extends UnitFessTestCase {

    @Override
    protected void setUp(TestInfo testInfo) throws Exception {
        super.setUp(testInfo);
    }

    @Override