* As the `q` parameter is declared with `= None`, it is optional.
    * Without the `None` it would be required (as is the body in the case with `PUT`).
* For `PUT` requests to `/items/{item_id}`, read the body as JSON:
    * Check that it has a required attribute `name` that should be a `str`.
    * Check that it has a required attribute `price` that has to be a `float`.

                                    "$ref": "#/components/schemas/Item",
                                },
                            },
                        },
                        "required": True,
                    },
                    "responses": {
                        "200": {
                            "description": "Successful Response",
                            "content": {

                            "application/json": {
                                "schema": {"$ref": "#/components/schemas/ItemGroup"}
                            }
                        },
                        "required": True,
                    },
                    "responses": {
                        "200": {
                            "description": "Successful Response",

    @Required
    public String dictId;

    /** The CRUD operation mode for form processing */
    @ValidateTypeFailure
    public Integer crudMode;

    /** The input word that should be stemmed differently */
    @Required
    @Size(max = 1000)
    public String input;

    /** The desired stem output for the input word */
    @Required
    @Size(max = 1000)

@SuppressWarnings("JUnit4ClassUsedInJUnit3")
public class QueueOfferTester<E> extends AbstractQueueTester<E> {
  @CollectionFeature.Require(SUPPORTS_ADD)
  public void testOffer_supportedNotPresent() {
    assertTrue("offer(notPresent) should return true", getQueue().offer(e3()));
    expectAdded(e3());
  }

  @CollectionFeature.Require({SUPPORTS_ADD, ALLOWS_NULL_VALUES})
  public void testOffer_nullSupported() {

/// note

Having a default value of any type, including `None`, makes the parameter optional (not required).

///

## Required parameters { #required-parameters }

When we don't need to declare more validations or metadata, we can make the `q` query parameter required just by not declaring a default value, like:

```Python
q: str
```

instead of:

```Python

    public CreateForm() {
        // Default constructor
    }

    /** Dictionary identifier */
    @Required
    public String dictId;

    /** CRUD operation mode (CREATE, EDIT, etc.) */
    @ValidateTypeFailure
    public Integer crudMode;

    /** Word or phrase to be protected from analysis */
    @Required
    @Size(max = 1000)
    public String input;

    /**

     * This ID corresponds to a specific Kuromoji dictionary instance in the system.
     */
    @Required
    public String dictId;

    /**
     * The multipart file containing the Kuromoji user dictionary to be uploaded.
     * This file should be in the Kuromoji user dictionary format containing custom word definitions.
     */
    @Required
    public MultipartFormFile kuromojiFile;

    /**
     * Default constructor for UploadForm.

        // Default constructor
    }

    /**
     * Name of the crawling configuration.
     */
    @Required
    @Size(max = 200)
    public String crawlingConfigName;

    /**
     * Path or URL to be crawled by this configuration.
     */
    @Required
    @Size(max = 1000)
    public String crawlingConfigPath;

    /**

| Params     | Value    |
| :--        | :--      |
| *Type*     | *String* |
| *Required* | *No*     |

### RoleArn

The role ARN to use. This must be specified if and only if the web identity provider is configured with a role policy.

| Params     | Value    |
| :--        | :--      |
| *Type*     | *String* |
| *Required* | *No*     |

### Version