Revert "Remove specialize response-mapping request functions"

This reverts commit 1557c5f.

Author: adamw

core/src/main/scala/sttp/client4/request.scala

@@ -28,7 +28,6 @@ import sttp.attributes.AttributeMap
 trait GenericRequest[+T, -R] extends RequestBuilder[GenericRequest[T, R]] with RequestMetadata {
   def body: GenericRequestBody[R]
   def response: ResponseAsDelegate[T, R]
-
   def mapResponse[T2](f: T => T2): GenericRequest[T2, R]
 
   def toCurl: String = ToCurlConverter(this)
@@ -169,6 +168,19 @@ case class Request[T](
   def send(backend: SyncBackend): Response[T] = backend.send(this)
 }
 
+object Request {
+  implicit class RichRequestTEither[A, B](r: Request[Either[A, B]]) {
+    def mapResponseRight[B2](f: B => B2): Request[Either[A, B2]] = r.copy(response = r.response.mapRight(f))
+    def responseGetRight: Request[B] = r.copy(response = r.response.orFail)
+  }
+
+  implicit class RichRequestTEitherResponseException[HE, DE, B](
+      r: Request[Either[ResponseException[HE, DE], B]]
+  ) {
+    def responseGetEither: Request[Either[HE, B]] = r.copy(response = r.response.orFailDeserialization)
+  }
+}
+
 //
 
 /** Describes an HTTP request, along with a description of how the response body should be handled. Either the request

core/src/test/scala/sttp/client4/testing/BackendStubTests.scala

@@ -144,7 +144,8 @@ class BackendStubTests extends AnyFlatSpec with Matchers with ScalaFutures {
 
     val result = basicRequest
       .get(uri"http://example.org")
-      .response(asString.mapRight((_: String).toInt).mapRight((_: Int) * 2))
+      .mapResponseRight(_.toInt)
+      .mapResponseRight(_ * 2)
       .send(backend)
 
     result.body should be(Right(20))

core/src/test/scala/sttp/client4/testing/HttpTest.scala

@@ -92,7 +92,7 @@ trait HttpTest[F[_]]
     "as string with mapping using mapResponse" in {
       postEcho
         .body(testBody)
-        .response(asString.mapRight((_: String).length))
+        .mapResponseRight(_.length)
         .send(backend)
         .toFuture()
         .map(response => response.body should be(Right(expectedPostEchoResponse.length)))
@@ -572,7 +572,7 @@ trait HttpTest[F[_]]
     }
 
     "redirect when redirects should be followed, and the response is parsed" in {
-      r2.response(asString.mapRight((_: String).toInt)).send(backend).toFuture().map { resp =>
+      r2.response(asString).mapResponseRight(_.toInt).send(backend).toFuture().map { resp =>
         resp.code shouldBe StatusCode.Ok
         resp.body shouldBe Right(r4response.toInt)
       }

core/src/test/scalanative/sttp/client4/testing/SyncHttpTest.scala

@@ -61,7 +61,7 @@ trait SyncHttpTest
     "as string with mapping using mapResponse" in {
       val response = postEcho
         .body(testBody)
-        .response(asString.mapRight((_: String).length))
+        .mapResponseRight(_.length)
         .send(backend)
       response.body should be(Right(expectedPostEchoResponse.length))
     }