[items] Item: Declare null as allowed value for sendCommand, postUpdate (#452)

Signed-off-by: Florian Hotze <dev@florianhotze.com>

Author: florian-h05

src/items/items.js

@@ -309,7 +309,7 @@ class Item {
    * // Turn on the Hallway lights for 5 minutes, then turn them off
    * items.getItem('HallwayLight').sendCommand('ON', time.Duration.ofMinutes(5), 'OFF');
    *
-   * @param {string|number|ZonedDateTime|Instant|Quantity|HostState} value the value of the command to send, such as 'ON'
+   * @param {string|number|ZonedDateTime|Instant|Quantity|HostState|null} value the value of the command to send, such as 'ON'
    * @param {Duration} [expire] optional duration (see {@link https://js-joda.github.io/js-joda/class/packages/core/src/Duration.js~Duration.html JS-Joda: Duration}) after which the command expires and the Item is commanded back to its previous state or `onExpire`
    * @param {string|number|ZonedDateTime|Instant|Quantity|HostState} [onExpire] the optional value of the command to apply on expire, default is the current state
    * @see sendCommandIfDifferent
@@ -482,7 +482,7 @@ class Item {
   /**
    * Posts an update to the Item.
    *
-   * @param {string|number|ZonedDateTime|Instant|Quantity|HostState} value the value of the command to send, such as 'ON'
+   * @param {string|number|ZonedDateTime|Instant|Quantity|HostState|null} value the value of the command to send, such as 'ON'
    * @see postToggleUpdate
    * @see sendCommand
    */

types/items/items.d.ts

@@ -297,13 +297,13 @@ export class Item {
      * // Turn on the Hallway lights for 5 minutes, then turn them off
      * items.getItem('HallwayLight').sendCommand('ON', time.Duration.ofMinutes(5), 'OFF');
      *
-     * @param {string|number|ZonedDateTime|Instant|Quantity|HostState} value the value of the command to send, such as 'ON'
+     * @param {string|number|ZonedDateTime|Instant|Quantity|HostState|null} value the value of the command to send, such as 'ON'
      * @param {Duration} [expire] optional duration (see {@link https://js-joda.github.io/js-joda/class/packages/core/src/Duration.js~Duration.html JS-Joda: Duration}) after which the command expires and the Item is commanded back to its previous state or `onExpire`
      * @param {string|number|ZonedDateTime|Instant|Quantity|HostState} [onExpire] the optional value of the command to apply on expire, default is the current state
      * @see sendCommandIfDifferent
      * @see postUpdate
      */
-    sendCommand(value: string | number | ZonedDateTime | Instant | Quantity | HostState, expire?: Duration, onExpire?: string | number | ZonedDateTime | Instant | Quantity | HostState): void;
+    sendCommand(value: string | number | ZonedDateTime | Instant | Quantity | HostState | null, expire?: Duration, onExpire?: string | number | ZonedDateTime | Instant | Quantity | HostState): void;
     /**
      * Sends a command to the Item, but only if the current state is not what is being sent.
      *
@@ -349,11 +349,11 @@ export class Item {
     /**
      * Posts an update to the Item.
      *
-     * @param {string|number|ZonedDateTime|Instant|Quantity|HostState} value the value of the command to send, such as 'ON'
+     * @param {string|number|ZonedDateTime|Instant|Quantity|HostState|null} value the value of the command to send, such as 'ON'
      * @see postToggleUpdate
      * @see sendCommand
      */
-    postUpdate(value: string | number | ZonedDateTime | Instant | Quantity | HostState): void;
+    postUpdate(value: string | number | ZonedDateTime | Instant | Quantity | HostState | null): void;
     /**
      * Gets the names of the groups this Item is member of.
      * @returns {string[]}