OpenAIService - new functions/endpoints - retrieveAssistantFile

The wrapped API:
GET https://api.openai.com/v1/assistants/{assistant_id}/files/{file_id}

openai-client/src/main/scala/io/cequence/openaiscala/service/OpenAIServiceImpl.scala

@@ -765,4 +765,21 @@ private trait OpenAIServiceImpl extends OpenAICoreServiceImpl with OpenAIService
     ).map { response =>
       handleNotFoundAndError(response).map(_.asSafe[Assistant])
     }
+
+  /**
+   * Retrieves an AssistantFile.
+   *
+   * @param assistantId
+   * The ID of the assistant who the file belongs to.
+   * @param fileId
+   * The ID of the file we're getting.
+   */
+  override def retrieveAssistantFile(assistantId: String, fileId: String): Future[Option[AssistantFile]] =
+    execGETWithStatus(
+      EndPoint.assistants,
+      Some(s"$assistantId/files/$fileId")
+    ).map { response =>
+      handleNotFoundAndError(response).map(_.asSafe[AssistantFile])
+    }
+
 }

openai-core/src/main/scala/io/cequence/openaiscala/service/OpenAIService.scala

@@ -834,4 +834,14 @@ trait OpenAIService extends OpenAICoreService {
    */
   def retrieveAssistant(assistantId: String): Future[Option[Assistant]]
 
+  /**
+   * Retrieves an AssistantFile.
+   *
+   * @param assistantId
+   *   The ID of the assistant who the file belongs to.
+   * @param fileId
+   *   The ID of the file we're getting.
+   */
+  def retrieveAssistantFile(assistantId: String, fileId: String): Future[Option[AssistantFile]]
+
 }

openai-core/src/main/scala/io/cequence/openaiscala/service/OpenAIServiceWrapper.scala

@@ -338,6 +338,9 @@ trait OpenAIServiceWrapper extends OpenAIService {
   override def retrieveAssistant(assistantId: String): Future[Option[Assistant]] =
     wrap(_.retrieveAssistant(assistantId))
 
+  override def retrieveAssistantFile(assistantId: String, fileId: String): Future[Option[AssistantFile]] =
+    wrap(_.retrieveAssistantFile(assistantId, fileId))
+
   protected def wrap[T](
     fun: OpenAIService => Future[T]
   ): Future[T]

openai-examples/src/main/scala/io/cequence/openaiscala/examples/RetrieveAssistantFile.scala

@@ -0,0 +1,17 @@
+package io.cequence.openaiscala.examples
+
+import scala.concurrent.Future
+
+object RetrieveAssistantFile extends Example {
+
+  override protected def run: Future[_] =
+    for {
+      assistant <- service.retrieveAssistantFile(
+        assistantId = "asst_Btbc2h7dqyDU52g1KfBa2XE8",
+        fileId = "file_2bX"
+      )
+    } yield {
+      println(assistant)
+    }
+
+}