Use getContent() directly for agent streaming instead of print_stream helper

Author: OskarStark

examples/openai/agent-stream-sources.php

@@ -37,8 +37,9 @@
 
 $result = $agent->call(new MessageBag(Message::ofUser($prompt)), ['stream' => true]);
 
-print_stream($result);
-
+foreach ($result->getContent() as $word) {
+    echo $word;
+}
 echo \PHP_EOL;
 
 echo 'Used sources:'.\PHP_EOL;