diff --git a/modules/swagger-codegen/src/main/resources/Java/libraries/retrofit2/ApiClient.mustache b/modules/swagger-codegen/src/main/resources/Java/libraries/retrofit2/ApiClient.mustache
index 28df92a038c7..736066c8b41f 100644
--- a/modules/swagger-codegen/src/main/resources/Java/libraries/retrofit2/ApiClient.mustache
+++ b/modules/swagger-codegen/src/main/resources/Java/libraries/retrofit2/ApiClient.mustache
@@ -103,14 +103,14 @@ public class ApiClient {
                 .setUsername(username)
                 .setPassword(password);
     }
-    
+
    public void createDefaultAdapter() {
         Gson gson = new GsonBuilder()
                 .setDateFormat("yyyy-MM-dd'T'HH:mm:ss.SSSZ")
                 .create();
 
         okClient = new OkHttpClient();
-        
+
         String baseUrl = "{{basePath}}";
         if(!baseUrl.endsWith("/"))
         	baseUrl = baseUrl + "/";
@@ -125,7 +125,7 @@ public class ApiClient {
 
     public <S> S createService(Class<S> serviceClass) {
         return adapterBuilder.build().create(serviceClass);
-        
+
     }
 
     /**
@@ -203,7 +203,7 @@ public class ApiClient {
             }
         }
     }
-    
+
     /**
      * Helper method to configure the oauth accessCode/implicit flow parameters
      * @param clientId
@@ -225,7 +225,7 @@ public class ApiClient {
             }
         }
     }
-    
+
     /**
      * Configures a listener which is notified when a new access token is received.
      * @param accessTokenListener
@@ -272,7 +272,7 @@ public class ApiClient {
     public OkHttpClient getOkClient() {
         return okClient;
     }
-    
+
     public void addAuthsToOkClient(OkHttpClient okClient) {
         for(Interceptor apiAuthorization : apiAuthorizations.values()) {
             okClient.interceptors().add(apiAuthorization);
@@ -308,14 +308,14 @@ class GsonResponseBodyConverterToString<T> implements Converter<ResponseBody, T>
 	    String returned = value.string();
 	    try {
 	      return gson.fromJson(returned, type);
-	    } 
+	    }
 	    catch (JsonParseException e) {
                 return (T) returned;
-        } 
+        }
 	 }
 }
 
-class GsonCustomConverterFactory extends Converter.Factory 
+class GsonCustomConverterFactory extends Converter.Factory
 {
 	public static GsonCustomConverterFactory create(Gson gson) {
 	    return new GsonCustomConverterFactory(gson);
diff --git a/modules/swagger-codegen/src/main/resources/Java/libraries/retrofit2/CollectionFormats.mustache b/modules/swagger-codegen/src/main/resources/Java/libraries/retrofit2/CollectionFormats.mustache
index a549ea59d1c2..8c91c335dfce 100644
--- a/modules/swagger-codegen/src/main/resources/Java/libraries/retrofit2/CollectionFormats.mustache
+++ b/modules/swagger-codegen/src/main/resources/Java/libraries/retrofit2/CollectionFormats.mustache
@@ -4,18 +4,18 @@ import java.util.Arrays;
 import java.util.List;
 
 public class CollectionFormats {
-    
+
     public static class CSVParams {
 
         protected List<String> params;
-        
+
         public CSVParams() {
         }
-        
+
         public CSVParams(List<String> params) {
             this.params = params;
         }
-        
+
         public CSVParams(String... params) {
             this.params = Arrays.asList(params);
         }
@@ -27,19 +27,19 @@ public class CollectionFormats {
         public void setParams(List<String> params) {
             this.params = params;
         }
-        
+
         @Override
         public String toString() {
             return StringUtil.join(params.toArray(new String[0]), ",");
         }
-        
+
     }
-    
+
     public static class SSVParams extends CSVParams {
-        
+
         public SSVParams() {
         }
-        
+
         public SSVParams(List<String> params) {
             super(params);
         }
@@ -53,16 +53,16 @@ public class CollectionFormats {
             return StringUtil.join(params.toArray(new String[0]), " ");
         }
     }
-    
+
     public static class TSVParams extends CSVParams {
-        
+
         public TSVParams() {
         }
-        
+
         public TSVParams(List<String> params) {
             super(params);
         }
-        
+
         public TSVParams(String... params) {
             super(params);
         }
@@ -72,16 +72,16 @@ public class CollectionFormats {
             return StringUtil.join( params.toArray(new String[0]), "\t");
         }
     }
-    
+
     public static class PIPESParams extends CSVParams {
-        
+
         public PIPESParams() {
         }
-        
+
         public PIPESParams(List<String> params) {
             super(params);
         }
-        
+
         public PIPESParams(String... params) {
             super(params);
         }
@@ -91,5 +91,5 @@ public class CollectionFormats {
             return StringUtil.join(params.toArray(new String[0]), "|");
         }
     }
-    
+
 }