Mark additional usage fields as nullable (#1516)

Co-authored-by: ci.datadog-api-spec <packages@datadoghq.com> 7e6d51c

datadog_api_client.v1.model.html

@@ -26084,7 +26084,7 @@ <h1 id="datadog-api-client-v1-model--page-root">datadog_api_client.v1.model<a cl
 <dt class="field-odd">Parameters<span class="colon">:</span></dt>
 <dd class="field-odd"><ul class="simple">
 <li><p><strong>hour</strong> (<em>datetime</em><em>, </em><em>optional</em>) – The hour for the usage.</p></li>
-<li><p><strong>iot_device_count</strong> (<em>int</em><em>, </em><em>optional</em>) – The total number of IoT devices during a given hour.</p></li>
+<li><p><strong>iot_device_count</strong> (<em>int</em><em>, </em><em>none_type</em><em>, </em><em>optional</em>) – The total number of IoT devices during a given hour.</p></li>
 <li><p><strong>org_name</strong> (<em>str</em><em>, </em><em>optional</em>) – The organization name.</p></li>
 <li><p><strong>public_id</strong> (<em>str</em><em>, </em><em>optional</em>) – The organization public ID.</p></li>
 </ul>
@@ -26193,7 +26193,7 @@ <h1 id="datadog-api-client-v1-model--page-root">datadog_api_client.v1.model<a cl
 <li><p><strong>org_name</strong> (<em>str</em><em>, </em><em>optional</em>) – The organization name.</p></li>
 <li><p><strong>public_id</strong> (<em>str</em><em>, </em><em>optional</em>) – The organization public ID.</p></li>
 <li><p><strong>rehydrated_indexed_events_count</strong> (<em>int</em><em>, </em><em>none_type</em><em>, </em><em>optional</em>) – Rehydrated logs indexed with this retention period during a given hour.</p></li>
-<li><p><strong>retention</strong> (<em>str</em><em>, </em><em>optional</em>) – The retention period in days or “custom” for all custom retention usage.</p></li>
+<li><p><strong>retention</strong> (<em>str</em><em>, </em><em>none_type</em><em>, </em><em>optional</em>) – The retention period in days or “custom” for all custom retention usage.</p></li>
 </ul>
 </dd>
 </dl>
@@ -26323,7 +26323,7 @@ <h1 id="datadog-api-client-v1-model--page-root">datadog_api_client.v1.model<a cl
 <dl class="field-list simple">
 <dt class="field-odd">Parameters<span class="colon">:</span></dt>
 <dd class="field-odd"><ul class="simple">
-<li><p><strong>host_count</strong> (<em>int</em><em>, </em><em>optional</em>) – Contains the number of active NPM hosts.</p></li>
+<li><p><strong>host_count</strong> (<em>int</em><em>, </em><em>none_type</em><em>, </em><em>optional</em>) – Contains the number of active NPM hosts.</p></li>
 <li><p><strong>hour</strong> (<em>datetime</em><em>, </em><em>optional</em>) – The hour for the usage.</p></li>
 <li><p><strong>org_name</strong> (<em>str</em><em>, </em><em>optional</em>) – The organization name.</p></li>
 <li><p><strong>public_id</strong> (<em>str</em><em>, </em><em>optional</em>) – The organization public ID.</p></li>