/// note

FastAPI will know that the value of `q` is not required because of the default value `= None`.

The `str | None` (Python 3.10+) or `Union` in `Union[str, None]` (Python 3.8+) is not used by FastAPI to determine that the value is not required, it will know it's not required because it has a default value of `= None`.

    fun name(name: String) =
      apply {
        require(name.trim() == name) { "name is not trimmed" }
        this.name = name
      }

    fun value(value: String) =
      apply {
        require(value.trim() == value) { "value is not trimmed" }
        this.value = value
      }

    fun expiresAt(expiresAt: Long) =
      apply {
        var expiresAt = expiresAt

  public NavigableMap<K, V> tailMap(K fromKey, boolean inclusive) {
    return new SafeTreeMap<>(delegate.tailMap(checkValid(fromKey), inclusive));
  }

  @Override
  public Collection<V> values() {
    return delegate.values();
  }

  @CanIgnoreReturnValue
  private <T> T checkValid(T t) {
    // a ClassCastException is what's supposed to happen!
    @SuppressWarnings("unchecked")
    K k = (K) t;

func (k *KeycloakProvider) LoginWithClientID(clientID, clientSecret string) error {
	values := url.Values{}
	values.Set("client_id", clientID)
	values.Set("client_secret", clientSecret)
	values.Set("grant_type", "client_credentials")

	req, err := http.NewRequest(http.MethodPost, k.oeConfig.TokenEndpoint, strings.NewReader(values.Encode()))
	if err != nil {
		return err
	}

		// This is a JSON object type (that preserves key
		// order)
		kvs = v.Value.(jstream.KVS)
	} else {
		// To be AWS S3 compatible Select for JSON needs to
		// output non-object JSON as single column value
		// i.e. a map with `_1` as key and value as the
		// non-object.
		kvs = jstream.KVS{jstream.KV{Key: "_1", Value: v.Value}}
	}

	dstRec, ok := dst.(*Record)
	if !ok {
		dstRec = &Record{}
	}

        flushAttributes();
        builder.append(value);
        return this;
    }

    public Ansi a(double value) {
        flushAttributes();
        builder.append(value);
        return this;
    }

    public Ansi a(float value) {
        flushAttributes();
        builder.append(value);
        return this;
    }

    public Ansi a(int value) {

   * Maximum length of frame payload. Larger payloads, if supported by the frame type, can use the
   * special values [PAYLOAD_SHORT] or [PAYLOAD_LONG].
   */
  internal const val PAYLOAD_BYTE_MAX = 125L

  /** Maximum length of close message in bytes. */
  internal const val CLOSE_MESSAGE_MAX = PAYLOAD_BYTE_MAX - 2

  /**
   * Value for [B1_MASK_LENGTH] which indicates the next two bytes are the unsigned length.
   */

                    value = getPropertyValue(value, tokenizer.nextPropertyName());
                    break;
                default:
                    // could not parse expression
                    return null;
            }
        }

        if (value instanceof Optional) {
            value = ((Optional<?>) value).orElse(null);
        }
        return value;
    }

    public String normalizeHtmlLang(final String value) {
        final String defaultLang = ComponentUtil.getFessConfig().getCrawlerDocumentHtmlDefaultLang();
        if (StringUtil.isNotBlank(defaultLang)) {
            return defaultLang;
        }

        return normalizeLang(value);
    }

    public String normalizeLang(final String value) {
        if (StringUtil.isBlank(value)) {
            return null;
        }

     |       anything, you could just leave off the <value/> inside the activation-property.
     |
    <profile>
      <id>env-dev</id>

      <activation>
        <property>
          <name>target-env</name>
          <value>dev</value>
        </property>
      </activation>

      <properties>