/**
   * Returns the element at the specified position in an iterable or a default value otherwise.
   *
   * <p><b>{@code Stream} equivalent:</b> {@code
   * stream.skip(position).findFirst().orElse(defaultValue)} (returns the default value if the index
   * is out of bounds)
   *
   * @param position position of the element to return
   * @param defaultValue the default value to return if {@code position} is greater than or equal to

    setDefault(Float.class, 1F);
    setDefault(double.class, 1D);
    setDefault(Double.class, 1D);
    setDefault(Class.class, Class.class);
  }

  /**
   * Sets the default value for {@code type}. The default value isn't used in testing {@link
   * Object#equals} because more than one sample instances are needed for testing inequality. To set

# /---------------------------------------------------------------------------
# lastafluteMap: (NotRequired - Default map:{})
#
# Specification:
# map:{
#     ; serviceName = [your service name]
#     ; domainPackage = [package]
#     ; environmentList = list:{ [environment name] }
#     ; isMakeActionHtml = [true or false]
#     ; commonMap = map:{
#         ; path = [relative path to common project from DBFlute client]

    return implied;
  }

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

    SetFeature[] absent() default {};
  }

    public static final String USER_DICT_PATH = "fess.user.dict.path";

    /** The text separator. */
    public static final String TEXT_SEPARATOR = " ";

    /** The default role for guest users. */
    public static final String DEFAULT_ROLE = "_guest_";

    /** The default document type. */
    public static final String DEFAULT_TYPE = "_doc";

 * It serves as a data transfer object between the web layer and the crawling
 * service components.
 */
public class StartCrawlingForm {

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

        doc.put("key", "value");
        assertEquals("value", DocumentUtil.getValue(doc, "key", String.class, "default"));

        doc.put("key", null);
        assertEquals("default", DocumentUtil.getValue(doc, "key", String.class, "default"));
    }

    public void test_list_with_null_elements() {
        Map<String, Object> doc = new HashMap<>();
        List<String> listWithNulls = Arrays.asList("a", null, "b", null, "c");

import jakarta.annotation.Resource;

/**
 * Admin action for Key Match management.
 *
 */
public class AdminKeymatchAction extends FessAdminAction {

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

    /** The role name for key match administration. */
    public static final String ROLE = "admin-keymatch";

					if err := preloadEntryPoint(tx, nestedJoins, &tx.Statement.Schema.Relationships, preloadMap[name], associationsConds); err != nil {
						return err
					}
				default:
					return gorm.ErrInvalidData
				}
			} else {
				tx := db.Table("").Session(&gorm.Session{Context: db.Statement.Context, SkipHooks: db.Statement.SkipHooks})
				tx.Statement.ReflectValue = db.Statement.ReflectValue

Entonces:

```Python
q: Union[str, None] = Query(default=None)
```

...hace que el parámetro sea opcional, con un valor por defecto de `None`, lo mismo que:

```Python