♻️ Make remaining case classes final. (#358)

Author: jwojnowski

oauth2-jsoniter/shared/src/main/scala/com/ocadotechnology/sttp/oauth2/json/jsoniter/JsoniterJsonDecoders.scala

@@ -134,12 +134,12 @@ trait JsoniterJsonDecoders {
 
 object JsoniterJsonDecoders {
 
-  private case class TokenType(tokenType: String)
+  private final case class TokenType(tokenType: String)
 
   private implicit val tokenTypeDecoder: JsonValueCodec[TokenType] =
     JsonCodecMaker.make(CodecMakerConfig.withFieldNameMapper(JsonCodecMaker.enforce_snake_case))
 
-  private case class IntermediateOAuth2Error(error: String, errorDescription: Option[String])
+  private final case class IntermediateOAuth2Error(error: String, errorDescription: Option[String])
 
   private implicit val oAuth2ErrorHelperDecoder: JsonValueCodec[IntermediateOAuth2Error] =
     JsonCodecMaker.make(CodecMakerConfig.withFieldNameMapper(JsonCodecMaker.enforce_snake_case))

oauth2/shared/src/main/scala/com/ocadotechnology/sttp/oauth2/AuthorizationCodeProvider.scala

@@ -88,11 +88,11 @@ object AuthorizationCodeProvider {
 
   object Config {
 
-    case class Path(segments: List[Segment]) {
+    final case class Path(segments: List[Segment]) {
       def values: List[String] = segments.map(_.value)
     }
 
-    case class Segment(value: String) extends AnyVal
+    final case class Segment(value: String) extends AnyVal
 
     // Values chosen for backwards compatibilty
     val default: Config = Config(

oauth2/shared/src/main/scala/com/ocadotechnology/sttp/oauth2/OAuth2TokenResponse.scala

@@ -2,7 +2,7 @@ package com.ocadotechnology.sttp.oauth2
 
 import scala.concurrent.duration.FiniteDuration
 
-case class OAuth2TokenResponse(
+final case class OAuth2TokenResponse(
   accessToken: Secret[String],
   scope: String,
   tokenType: String,
@@ -36,7 +36,7 @@ object OAuth2TokenResponse {
 }
 
 // @deprecated("This model will be removed in next release", "0.10.0")
-case class ExtendedOAuth2TokenResponse(
+final case class ExtendedOAuth2TokenResponse(
   accessToken: Secret[String],
   refreshToken: String,
   expiresIn: FiniteDuration,

oauth2/shared/src/main/scala/com/ocadotechnology/sttp/oauth2/json/JsonDecoder.scala

@@ -9,7 +9,7 @@ trait JsonDecoder[A] {
 object JsonDecoder {
   def apply[A](implicit ev: JsonDecoder[A]): JsonDecoder[A] = ev
 
-  case class Error(message: String, cause: Option[Throwable] = None) extends Exception(message, cause.orNull)
+  final case class Error(message: String, cause: Option[Throwable] = None) extends Exception(message, cause.orNull)
 
   object Error {
     def fromThrowable(throwable: Throwable): Error = JsonDecoder.Error(throwable.getMessage, Some(throwable))