diff --git a/modules/openapi-generator/src/test/resources/integrationtests/scala/client/required-attributes-expected/src/main/scala/io/swagger/client/api/HobbiesApi.scala b/modules/openapi-generator/src/test/resources/integrationtests/scala/client/required-attributes-expected/src/main/scala/io/swagger/client/api/HobbiesApi.scala
deleted file mode 100644
index 3f8ca7c48809dd99bf04c2f46c9d98b9e512621d..0000000000000000000000000000000000000000
--- a/modules/openapi-generator/src/test/resources/integrationtests/scala/client/required-attributes-expected/src/main/scala/io/swagger/client/api/HobbiesApi.scala
+++ /dev/null
@@ -1,205 +0,0 @@
-/**
- * Scala Client API Integration Test
- * No description provided (generated by Swagger Codegen https://github.com/swagger-api/swagger-codegen)
- *
- * OpenAPI spec version: 1
- * 
- *
- * NOTE: This class is auto generated by the swagger code generator program.
- * https://github.com/swagger-api/swagger-codegen.git
- * Do not edit the class manually.
- */
-
-package io.swagger.client.api
-
-import java.text.SimpleDateFormat
-
-import io.swagger.client.model.ArrayByte
-import java.util.Date
-import io.swagger.client.model.Hobby
-import io.swagger.client.{ApiInvoker, ApiException}
-
-import com.sun.jersey.multipart.FormDataMultiPart
-import com.sun.jersey.multipart.file.FileDataBodyPart
-
-import javax.ws.rs.core.MediaType
-
-import java.io.File
-import java.util.Date
-import java.util.TimeZone
-
-import scala.collection.mutable.HashMap
-
-import com.wordnik.swagger.client._
-import scala.concurrent.Future
-import collection.mutable
-
-import java.net.URI
-
-import com.wordnik.swagger.client.ClientResponseReaders.Json4sFormatsReader._
-import com.wordnik.swagger.client.RequestWriters.Json4sFormatsWriter._
-
-import scala.concurrent.ExecutionContext.Implicits.global
-import scala.concurrent._
-import scala.concurrent.duration._
-import scala.util.{Failure, Success, Try}
-
-import org.json4s._
-
-class HobbiesApi(
-  val defBasePath: String = "https://localhost:8080",
-  defApiInvoker: ApiInvoker = ApiInvoker
-) {
-  private lazy val dateTimeFormatter = {
-    val formatter = new SimpleDateFormat("yyyy-MM-dd'T'HH:mm:ss.SSSZ")
-    formatter.setTimeZone(TimeZone.getTimeZone("UTC"))
-    formatter
-  }
-  private val dateFormatter = {
-    val formatter = new SimpleDateFormat("yyyy-MM-dd")
-    formatter.setTimeZone(TimeZone.getTimeZone("UTC"))
-    formatter
-  }
-  implicit val formats = new org.json4s.DefaultFormats {
-    override def dateFormatter = dateTimeFormatter
-  }
-  implicit val stringReader: ClientResponseReader[String] = ClientResponseReaders.StringReader
-  implicit val unitReader: ClientResponseReader[Unit] = ClientResponseReaders.UnitReader
-  implicit val jvalueReader: ClientResponseReader[JValue] = ClientResponseReaders.JValueReader
-  implicit val jsonReader: ClientResponseReader[Nothing] = JsonFormatsReader
-  implicit val stringWriter: RequestWriter[String] = RequestWriters.StringWriter
-  implicit val jsonWriter: RequestWriter[Nothing] = JsonFormatsWriter
-
-  var basePath: String = defBasePath
-  var apiInvoker: ApiInvoker = defApiInvoker
-
-  def addHeader(key: String, value: String): mutable.HashMap[String, String] = {
-    apiInvoker.defaultHeaders += key -> value
-  }
-
-  val config: SwaggerConfig = SwaggerConfig.forUrl(new URI(defBasePath))
-  val client = new RestClient(config)
-  val helper = new HobbiesApiAsyncHelper(client, config)
-
-  /**
-   * Get hobbies
-   * Query hobbies with some additional optional meaningless parameters
-   *
-   * @param s a string (optional, default to some string)
-   * @param `class` a string, testing keyword escaping (optional, default to some string)
-   * @param i an integer (optional, default to 1)
-   * @param l a long (optional, default to 2)
-   * @param bool a bool (optional, default to true)
-   * @param f a float (optional, default to 0.1)
-   * @param d a double (optional, default to 10.005)
-   * @param datetime a date time (optional, default to 2018-01-01T08:30:00Z-04:00)
-   * @param date a date (optional, default to 2018-01-01)
-   * @param b a base64 encoded string (optional, default to c3dhZ2dlciBjb2RlZ2Vu)
-   * @param bin an octet string (optional, default to DEADBEEF)
-   * @return Hobby
-   */
-  def getHobbies(s: Option[String] = Option("some string"), `class`: Option[String] = Option("some string"), i: Option[Integer] = Option(1), l: Option[Long] = Option(2), bool: Option[Boolean] = Option(true), f: Option[Float] = Option(0.1), d: Option[Double] = Option(10.005), datetime: Option[Date] = Option(dateTimeFormatter.parse("2018-01-01T08:30:00Z-04:00")), date: Option[Date] = Option(dateFormatter.parse("2018-01-01")), b: Option[Array[Byte]] = Option("c3dhZ2dlciBjb2RlZ2Vu".getBytes), bin: Option[Array[Byte]] = Option("DEADBEEF".getBytes)): Option[Hobby] = {
-    val await = Try(Await.result(getHobbiesAsync(s, `class`, i, l, bool, f, d, datetime, date, b, bin), Duration.Inf))
-    await match {
-      case Success(i) => Some(await.get)
-      case Failure(t) => None
-    }
-  }
-
-  /**
-   * Get hobbies asynchronously
-   * Query hobbies with some additional optional meaningless parameters
-   *
-   * @param s a string (optional, default to some string)
-   * @param `class` a string, testing keyword escaping (optional, default to some string)
-   * @param i an integer (optional, default to 1)
-   * @param l a long (optional, default to 2)
-   * @param bool a bool (optional, default to true)
-   * @param f a float (optional, default to 0.1)
-   * @param d a double (optional, default to 10.005)
-   * @param datetime a date time (optional, default to 2018-01-01T08:30:00Z-04:00)
-   * @param date a date (optional, default to 2018-01-01)
-   * @param b a base64 encoded string (optional, default to c3dhZ2dlciBjb2RlZ2Vu)
-   * @param bin an octet string (optional, default to DEADBEEF)
-   * @return Future(Hobby)
-   */
-  def getHobbiesAsync(s: Option[String] = Option("some string"), `class`: Option[String] = Option("some string"), i: Option[Integer] = Option(1), l: Option[Long] = Option(2), bool: Option[Boolean] = Option(true), f: Option[Float] = Option(0.1), d: Option[Double] = Option(10.005), datetime: Option[Date] = Option(dateTimeFormatter.parse("2018-01-01T08:30:00Z-04:00")), date: Option[Date] = Option(dateFormatter.parse("2018-01-01")), b: Option[Array[Byte]] = Option("c3dhZ2dlciBjb2RlZ2Vu".getBytes), bin: Option[Array[Byte]] = Option("DEADBEEF".getBytes)): Future[Hobby] = {
-      helper.getHobbies(s, `class`, i, l, bool, f, d, datetime, date, b, bin)
-  }
-
-}
-
-class HobbiesApiAsyncHelper(client: TransportClient, config: SwaggerConfig) extends ApiClient(client, config) {
-
-  def getHobbies(s: Option[String] = Option("some string"),
-    `class`: Option[String] = Option("some string"),
-    i: Option[Integer] = Option(1),
-    l: Option[Long] = Option(2),
-    bool: Option[Boolean] = Option(true),
-    f: Option[Float] = Option(0.1),
-    d: Option[Double] = Option(10.005),
-    datetime: Option[Date] = Option(dateTimeFormatter.parse("2018-01-01T08:30:00Z-04:00")),
-    date: Option[Date] = Option(dateFormatter.parse("2018-01-01")),
-    b: Option[Array[Byte]] = Option("c3dhZ2dlciBjb2RlZ2Vu".getBytes),
-    bin: Option[Array[Byte]] = Option("DEADBEEF".getBytes)
-    )(implicit reader: ClientResponseReader[Hobby]): Future[Hobby] = {
-    // create path and map variables
-    val path = (addFmt("/hobbies"))
-
-    // query params
-    val queryParams = new mutable.HashMap[String, String]
-    val headerParams = new mutable.HashMap[String, String]
-
-    s match {
-      case Some(param) => queryParams += "s" -> param.toString
-      case _ => queryParams
-    }
-    `class` match {
-      case Some(param) => queryParams += "class" -> param.toString
-      case _ => queryParams
-    }
-    i match {
-      case Some(param) => queryParams += "i" -> param.toString
-      case _ => queryParams
-    }
-    l match {
-      case Some(param) => queryParams += "l" -> param.toString
-      case _ => queryParams
-    }
-    bool match {
-      case Some(param) => queryParams += "bool" -> param.toString
-      case _ => queryParams
-    }
-    f match {
-      case Some(param) => queryParams += "f" -> param.toString
-      case _ => queryParams
-    }
-    d match {
-      case Some(param) => queryParams += "d" -> param.toString
-      case _ => queryParams
-    }
-    datetime match {
-      case Some(param) => queryParams += "datetime" -> param.toString
-      case _ => queryParams
-    }
-    date match {
-      case Some(param) => queryParams += "date" -> param.toString
-      case _ => queryParams
-    }
-    b match {
-      case Some(param) => queryParams += "b" -> param.toString
-      case _ => queryParams
-    }
-    bin match {
-      case Some(param) => queryParams += "bin" -> param.toString
-      case _ => queryParams
-    }
-
-    val resFuture = client.submit("GET", path, queryParams.toMap, headerParams.toMap, "")
-    resFuture flatMap { resp =>
-      process(reader.read(resp))
-    }
-  }
-
-
-}
diff --git a/modules/openapi-generator/src/test/resources/integrationtests/scala/client/required-attributes-expected/src/main/scala/io/swagger/client/api/PeopleApi.scala b/modules/openapi-generator/src/test/resources/integrationtests/scala/client/required-attributes-expected/src/main/scala/io/swagger/client/api/PeopleApi.scala
deleted file mode 100644
index ca5a245b255eab59860705983b26cba42788f5da..0000000000000000000000000000000000000000
--- a/modules/openapi-generator/src/test/resources/integrationtests/scala/client/required-attributes-expected/src/main/scala/io/swagger/client/api/PeopleApi.scala
+++ /dev/null
@@ -1,225 +0,0 @@
-/**
- * Scala Client API Integration Test
- * No description provided (generated by Swagger Codegen https://github.com/swagger-api/swagger-codegen)
- *
- * OpenAPI spec version: 1
- * 
- *
- * NOTE: This class is auto generated by the swagger code generator program.
- * https://github.com/swagger-api/swagger-codegen.git
- * Do not edit the class manually.
- */
-
-package io.swagger.client.api
-
-import java.text.SimpleDateFormat
-
-import io.swagger.client.model.Person
-import io.swagger.client.{ApiInvoker, ApiException}
-
-import com.sun.jersey.multipart.FormDataMultiPart
-import com.sun.jersey.multipart.file.FileDataBodyPart
-
-import javax.ws.rs.core.MediaType
-
-import java.io.File
-import java.util.Date
-import java.util.TimeZone
-
-import scala.collection.mutable.HashMap
-
-import com.wordnik.swagger.client._
-import scala.concurrent.Future
-import collection.mutable
-
-import java.net.URI
-
-import com.wordnik.swagger.client.ClientResponseReaders.Json4sFormatsReader._
-import com.wordnik.swagger.client.RequestWriters.Json4sFormatsWriter._
-
-import scala.concurrent.ExecutionContext.Implicits.global
-import scala.concurrent._
-import scala.concurrent.duration._
-import scala.util.{Failure, Success, Try}
-
-import org.json4s._
-
-class PeopleApi(
-  val defBasePath: String = "https://localhost:8080",
-  defApiInvoker: ApiInvoker = ApiInvoker
-) {
-  private lazy val dateTimeFormatter = {
-    val formatter = new SimpleDateFormat("yyyy-MM-dd'T'HH:mm:ss.SSSZ")
-    formatter.setTimeZone(TimeZone.getTimeZone("UTC"))
-    formatter
-  }
-  private val dateFormatter = {
-    val formatter = new SimpleDateFormat("yyyy-MM-dd")
-    formatter.setTimeZone(TimeZone.getTimeZone("UTC"))
-    formatter
-  }
-  implicit val formats = new org.json4s.DefaultFormats {
-    override def dateFormatter = dateTimeFormatter
-  }
-  implicit val stringReader: ClientResponseReader[String] = ClientResponseReaders.StringReader
-  implicit val unitReader: ClientResponseReader[Unit] = ClientResponseReaders.UnitReader
-  implicit val jvalueReader: ClientResponseReader[JValue] = ClientResponseReaders.JValueReader
-  implicit val jsonReader: ClientResponseReader[Nothing] = JsonFormatsReader
-  implicit val stringWriter: RequestWriter[String] = RequestWriters.StringWriter
-  implicit val jsonWriter: RequestWriter[Nothing] = JsonFormatsWriter
-
-  var basePath: String = defBasePath
-  var apiInvoker: ApiInvoker = defApiInvoker
-
-  def addHeader(key: String, value: String): mutable.HashMap[String, String] = {
-    apiInvoker.defaultHeaders += key -> value
-  }
-
-  val config: SwaggerConfig = SwaggerConfig.forUrl(new URI(defBasePath))
-  val client = new RestClient(config)
-  val helper = new PeopleApiAsyncHelper(client, config)
-
-  /**
-   * People listing
-   * 
-   *
-   * @param age Limit results to people of a certain age. (optional)
-   * @return List[Person]
-   */
-  def getPeople(age: Option[Long] = None): Option[List[Person]] = {
-    val await = Try(Await.result(getPeopleAsync(age), Duration.Inf))
-    await match {
-      case Success(i) => Some(await.get)
-      case Failure(t) => None
-    }
-  }
-
-  /**
-   * People listing asynchronously
-   * 
-   *
-   * @param age Limit results to people of a certain age. (optional)
-   * @return Future(List[Person])
-   */
-  def getPeopleAsync(age: Option[Long] = None): Future[List[Person]] = {
-      helper.getPeople(age)
-  }
-
-  /**
-   * get people by id
-   * Retrieves a single person record by personId
-   *
-   * @param personId The person's ID. 
-   * @return Person
-   */
-  def getPersonById(personId: Long): Option[Person] = {
-    val await = Try(Await.result(getPersonByIdAsync(personId), Duration.Inf))
-    await match {
-      case Success(i) => Some(await.get)
-      case Failure(t) => None
-    }
-  }
-
-  /**
-   * get people by id asynchronously
-   * Retrieves a single person record by personId
-   *
-   * @param personId The person's ID. 
-   * @return Future(Person)
-   */
-  def getPersonByIdAsync(personId: Long): Future[Person] = {
-      helper.getPersonById(personId)
-  }
-
-  /**
-   * People batch save
-   * 
-   *
-   * @param body Batch input of people to save 
-   * @param size Explicitly sets the batch size (optional, default to 25)
-   * @return List[Person]
-   */
-  def savePeople(body: List[Person], size: Option[Integer] = Option(25)): Option[List[Person]] = {
-    val await = Try(Await.result(savePeopleAsync(body, size), Duration.Inf))
-    await match {
-      case Success(i) => Some(await.get)
-      case Failure(t) => None
-    }
-  }
-
-  /**
-   * People batch save asynchronously
-   * 
-   *
-   * @param body Batch input of people to save 
-   * @param size Explicitly sets the batch size (optional, default to 25)
-   * @return Future(List[Person])
-   */
-  def savePeopleAsync(body: List[Person], size: Option[Integer] = Option(25)): Future[List[Person]] = {
-      helper.savePeople(body, size)
-  }
-
-}
-
-class PeopleApiAsyncHelper(client: TransportClient, config: SwaggerConfig) extends ApiClient(client, config) {
-
-  def getPeople(age: Option[Long] = None
-    )(implicit reader: ClientResponseReader[List[Person]]): Future[List[Person]] = {
-    // create path and map variables
-    val path = (addFmt("/people"))
-
-    // query params
-    val queryParams = new mutable.HashMap[String, String]
-    val headerParams = new mutable.HashMap[String, String]
-
-    age match {
-      case Some(param) => queryParams += "age" -> param.toString
-      case _ => queryParams
-    }
-
-    val resFuture = client.submit("GET", path, queryParams.toMap, headerParams.toMap, "")
-    resFuture flatMap { resp =>
-      process(reader.read(resp))
-    }
-  }
-
-  def getPersonById(personId: Long)(implicit reader: ClientResponseReader[Person]): Future[Person] = {
-    // create path and map variables
-    val path = (addFmt("/people/{personId}")
-      replaceAll("\\{" + "personId" + "\\}", personId.toString))
-
-    // query params
-    val queryParams = new mutable.HashMap[String, String]
-    val headerParams = new mutable.HashMap[String, String]
-
-
-    val resFuture = client.submit("GET", path, queryParams.toMap, headerParams.toMap, "")
-    resFuture flatMap { resp =>
-      process(reader.read(resp))
-    }
-  }
-
-  def savePeople(body: List[Person],
-    size: Option[Integer] = Option(25)
-    )(implicit reader: ClientResponseReader[List[Person]], writer: RequestWriter[List[Person]]): Future[List[Person]] = {
-    // create path and map variables
-    val path = (addFmt("/people"))
-
-    // query params
-    val queryParams = new mutable.HashMap[String, String]
-    val headerParams = new mutable.HashMap[String, String]
-
-    if (body == null) throw new Exception("Missing required parameter 'body' when calling PeopleApi->savePeople")
-    size match {
-      case Some(param) => queryParams += "size" -> param.toString
-      case _ => queryParams
-    }
-
-    val resFuture = client.submit("POST", path, queryParams.toMap, headerParams.toMap, writer.write(body))
-    resFuture flatMap { resp =>
-      process(reader.read(resp))
-    }
-  }
-
-
-}
diff --git a/modules/openapi-generator/src/test/resources/integrationtests/scala/client/required-attributes-expected/src/main/scala/io/swagger/client/model/Hobby.scala b/modules/openapi-generator/src/test/resources/integrationtests/scala/client/required-attributes-expected/src/main/scala/io/swagger/client/model/Hobby.scala
deleted file mode 100644
index 02f64681fa40b1bf25555d0983d9f0e679826a41..0000000000000000000000000000000000000000
--- a/modules/openapi-generator/src/test/resources/integrationtests/scala/client/required-attributes-expected/src/main/scala/io/swagger/client/model/Hobby.scala
+++ /dev/null
@@ -1,29 +0,0 @@
-/**
- * Scala Client API Integration Test
- * No description provided (generated by Swagger Codegen https://github.com/swagger-api/swagger-codegen)
- *
- * OpenAPI spec version: 1
- * 
- *
- * NOTE: This class is auto generated by the swagger code generator program.
- * https://github.com/swagger-api/swagger-codegen.git
- * Do not edit the class manually.
- */
-
-package io.swagger.client.model
-
-import java.util.Date
-
-case class Hobby (
-  id: Option[Long] = None,
-  name: Option[String] = None,
-  count: Option[Integer] = None,
-  rate: Option[Float] = None,
-  ratio: Option[Double] = None,
-  enabled: Option[Boolean] = None,
-  created: Option[Date] = None,
-  timestamp: Option[Date] = None,
-  bytes: Option[Array[Byte]] = None,
-  binary: Option[String] = None
-)
-
diff --git a/modules/openapi-generator/src/test/resources/integrationtests/scala/client/required-attributes-expected/src/main/scala/io/swagger/client/model/Person.scala b/modules/openapi-generator/src/test/resources/integrationtests/scala/client/required-attributes-expected/src/main/scala/io/swagger/client/model/Person.scala
deleted file mode 100644
index cd78718762b5ccc41513bb460d47d75b705e65f4..0000000000000000000000000000000000000000
--- a/modules/openapi-generator/src/test/resources/integrationtests/scala/client/required-attributes-expected/src/main/scala/io/swagger/client/model/Person.scala
+++ /dev/null
@@ -1,22 +0,0 @@
-/**
- * Scala Client API Integration Test
- * No description provided (generated by Swagger Codegen https://github.com/swagger-api/swagger-codegen)
- *
- * OpenAPI spec version: 1
- * 
- *
- * NOTE: This class is auto generated by the swagger code generator program.
- * https://github.com/swagger-api/swagger-codegen.git
- * Do not edit the class manually.
- */
-
-package io.swagger.client.model
-
-
-case class Person (
-  id: Long,
-  firstName: String,
-  lastName: String,
-  age: Option[Integer] = None
-)
-