return System.getProperty(key);
    }

    /**
     * Returns the system property value for the specified key, or the default value if not found.
     *
     * @param key the property key
     * @param defaultValue the default value
     * @return the property value, or the default value if not found
     */
    public static String getProperty(String key, String defaultValue) {

    assertEquals(
        "getOrDefault(absent, default) should return default",
        v3(),
        getMap().getOrDefault(k3(), v3()));
  }

  @MapFeature.Require(ALLOWS_NULL_KEYS)
  @CollectionSize.Require(absent = ZERO)
  public void testGetOrDefault_presentNull() {
    initMapWithNullKey();
    assertEquals(
        "getOrDefault(null, default) should return the associated value",
        getValueForNullKey(),

    private static final long serialVersionUID = 1L;

    /**
     * Default constructor.
     */
    public ElevateWordPager() {
        // Default constructor
    }

    /** Default page size for pagination */
    public static final int DEFAULT_PAGE_SIZE = 20;

    /** Default current page number */
    public static final int DEFAULT_CURRENT_PAGE_NUMBER = 1;

public class UserPager implements Serializable {

    /**
     * Default constructor for UserPager.
     */
    public UserPager() {
        // Default constructor
    }

    private static final long serialVersionUID = 1L;

    /** Default page size for user list pagination */
    public static final int DEFAULT_PAGE_SIZE = 20;

    /**
     * Default current page number for pagination.
     */

        id = null;
    }

    /**
     * Gets the default page size from configuration.
     *
     * @return The default number of records per page
     */
    protected int getDefaultPageSize() {
        return ComponentUtil.getFessConfig().getPagingPageSizeAsInteger();
    }

    /**
     * Gets the default current page number.
     *
     * @return The default current page number (1)
     */

    return implied;
  }

  @Retention(RetentionPolicy.RUNTIME)
  @Inherited
  @TesterAnnotation
  public @interface Require {
    SetFeature[] value() default {};

    SetFeature[] absent() default {};
  }

    /** Default interval time in milliseconds for web crawling. */
    public static final int DEFAULT_INTERVAL_TIME_FOR_WEB = 10000;

    /** Default number of threads for file system crawling. */
    public static final int DEFAULT_NUM_OF_THREAD_FOR_FS = 5;

    /** Default number of threads for web crawling. */
    public static final int DEFAULT_NUM_OF_THREAD_FOR_WEB = 1;

     * @return True if the user's information is editable, false otherwise.
     */
    default boolean isEditable() {
        return false;
    }

    /**
     * Refreshes the user's information from the underlying data source.
     * @return True if refresh was successful, false otherwise.
     */
    default boolean refresh() {
        return false;
    }

    return implied;
  }

  @Retention(RetentionPolicy.RUNTIME)
  @Inherited
  @TesterAnnotation
  public @interface Require {
    ListFeature[] value() default {};

    ListFeature[] absent() default {};
  }

    return implied;
  }

  @Retention(RetentionPolicy.RUNTIME)
  @Inherited
  @TesterAnnotation
  public @interface Require {
    MultimapFeature[] value() default {};

    MultimapFeature[] absent() default {};
  }