From 7ee72fc063ca662c3aaa9364a3c28590565b0f48 Mon Sep 17 00:00:00 2001
From: kenji yoshida <6b656e6a69@gmail.com>
Date: Thu, 19 Oct 2023 23:28:20 +0900
Subject: [PATCH] fix warning. add explicit type (#353)

---
 .../src/main/scala/scalapb/spark/TypedEncoders.scala           | 3 ++-
 1 file changed, 2 insertions(+), 1 deletion(-)

diff --git a/sparksql-scalapb/src/main/scala/scalapb/spark/TypedEncoders.scala b/sparksql-scalapb/src/main/scala/scalapb/spark/TypedEncoders.scala
index 2308441..2ec0564 100644
--- a/sparksql-scalapb/src/main/scala/scalapb/spark/TypedEncoders.scala
+++ b/sparksql-scalapb/src/main/scala/scalapb/spark/TypedEncoders.scala
@@ -110,7 +110,8 @@ trait Implicits {
       ct: ClassTag[T]
   ): TypedEncoder[T] = new typedEncoders.EnumTypedEncoder[T]
 
-  implicit def byteStringTypedEncoder = typedEncoders.ByteStringTypedEncoder
+  implicit def byteStringTypedEncoder: TypedEncoder[ByteString] =
+    typedEncoders.ByteStringTypedEncoder
 
   implicit def typedEncoderToEncoder[T: ClassTag](implicit
       ev: TypedEncoder[T]