Add accessor for wrapped DBAL Connection to TracingDriverConnection

Allows accessing e.g. underlying PDO instance so reflection does not have to be used for that.

Mimics DBAL's `Connection::getWrappedConnection()`` https://github.com/doctrine/dbal/blob/25496429ef4bba2352b0ced7daffe1b3dec83d13/src/Connection.php#L1518-L1525

Author: simPod

src/Tracing/Doctrine/DBAL/TracingDriverConnection.php

@@ -188,6 +188,11 @@ public function errorInfo()
         throw new \BadMethodCallException(sprintf('The %s() method is not supported on Doctrine DBAL 3.0.', __METHOD__));
     }
 
+    public function getWrappedConnection(): DriverConnectionInterface
+    {
+        return $this->decoratedConnection;
+    }
+
     /**
      * @phpstan-template T
      *

tests/Tracing/Doctrine/DBAL/TracingDriverConnectionTest.php

@@ -336,6 +336,13 @@ public function testRollBackDoesNothingIfNoSpanIsSetOnHub(): void
         $this->assertFalse($this->connection->rollBack());
     }
 
+    public function testCanAccessDecoratedConnection(): void
+    {
+        $connection = new TracingDriverConnection($this->hub, $this->decoratedConnection, 'foo_platform', []);
+
+        self::assertSame($this->decoratedConnection, $connection->getWrappedConnection());
+    }
+
     /**
      * @return \Generator<mixed>
      */