Regenerate firestore client (#6134)

Generated in GitHub action: https://togithub.com/googleapis/googleapis/google-api-php-client-services/actions/workflows/codegen.yaml

Author: yoshi-code-bot

src/Firestore/GoogleFirestoreAdminV1Index.php

@@ -24,8 +24,16 @@ class GoogleFirestoreAdminV1Index extends \Google\Collection
    * @var string
    */
   public $apiScope;
+  /**
+   * @var string
+   */
+  public $density;
   protected $fieldsType = GoogleFirestoreAdminV1IndexField::class;
   protected $fieldsDataType = 'array';
+  /**
+   * @var bool
+   */
+  public $multikey;
   /**
    * @var string
    */
@@ -53,6 +61,20 @@ public function getApiScope()
   {
     return $this->apiScope;
   }
+  /**
+   * @param string
+   */
+  public function setDensity($density)
+  {
+    $this->density = $density;
+  }
+  /**
+   * @return string
+   */
+  public function getDensity()
+  {
+    return $this->density;
+  }
   /**
    * @param GoogleFirestoreAdminV1IndexField[]
    */
@@ -67,6 +89,20 @@ public function getFields()
   {
     return $this->fields;
   }
+  /**
+   * @param bool
+   */
+  public function setMultikey($multikey)
+  {
+    $this->multikey = $multikey;
+  }
+  /**
+   * @return bool
+   */
+  public function getMultikey()
+  {
+    return $this->multikey;
+  }
   /**
    * @param string
    */