add hasDriver method

src/Basic/Client.php

@@ -58,6 +58,11 @@ public function getDriver(?string $alias): DriverInterface
         return $this->client->getDriver($alias);
     }
 
+    public function hasDriver(string $alias): bool
+    {
+        return $this->client->hasDriver($alias);
+    }
+
     public function writeTransaction(callable $tsxHandler, ?string $alias = null, ?TransactionConfiguration $config = null)
     {
         return $this->client->writeTransaction($tsxHandler, $alias, $config);

src/Client.php

@@ -153,6 +153,11 @@ public function verifyConnectivity(?string $driver = null): bool
         return $this->driverSetups->verifyConnectivity($this->defaultSessionConfiguration, $driver);
     }
 
+    public function hasDriver(string $alias): bool
+    {
+        return $this->driverSetups->hasDriver($alias);
+    }
+
     public function bindTransaction(?string $alias = null, ?TransactionConfiguration $config = null): void
     {
         $alias ??= $this->driverSetups->getDefaultAlias();

src/Common/DriverSetupManager.php

@@ -77,6 +77,11 @@ public function withSetup(DriverSetup $setup, ?string $alias = null, ?int $prior
         return $tbr;
     }
 
+    public function hasDriver(string $alias): bool
+    {
+        return array_key_exists($alias, $this->driverSetups);
+    }
+
     /**
      * @return DriverInterface<ResultFormat>
      */

src/Contracts/ClientInterface.php

@@ -76,6 +76,11 @@ public function beginTransaction(?iterable $statements = null, ?string $alias =
      */
     public function getDriver(?string $alias): DriverInterface;
 
+    /**
+     * Checks to see if the Client has the driver registered with the provided alias.
+     */
+    public function hasDriver(string $alias): bool;
+
     /**
      * @template U
      *