ported codegen v2 issue 6941 to v3

Author: HugoMario

src/main/java/io/swagger/codegen/v3/generators/DefaultCodegenConfig.java

@@ -1484,14 +1484,6 @@ else if (schema instanceof ComposedSchema) {
             }
         }
 
-        System.out.println(codegenModel.name);
-        System.out.println(codegenModel.dataType);
-        System.out.println(codegenModel.getIsInteger());
-        System.out.println(codegenModel.getIsNumber());
-        System.out.println(codegenModel.getIsBoolean());
-        System.out.println("--------");
-
-
         return codegenModel;
     }
 

src/main/java/io/swagger/codegen/v3/generators/swift/AbstractSwiftCodegen.java

@@ -51,6 +51,8 @@ public abstract class AbstractSwiftCodegen extends DefaultCodegenConfig {
     public static final String SWIFT_USE_API_NAMESPACE = "swiftUseApiNamespace";
     public static final String DEFAULT_POD_AUTHORS = "Swagger Codegen";
     public static final String LENIENT_TYPE_CAST = "lenientTypeCast";
+    protected static final String MODEL_CLASSES = "modelClasses";
+    protected static final String USE_MODEL_CLASSES = "useModelClasses";
 
     private static final String LIBRARY_PROMISE_KIT = "PromiseKit";
     private static final String LIBRARY_RX_SWIFT = "RxSwift";
@@ -192,6 +194,10 @@ public void processOpts() {
             additionalProperties.put(POD_AUTHORS, DEFAULT_POD_AUTHORS);
         }
 
+        if (additionalProperties.containsKey(MODEL_CLASSES)) {
+            additionalProperties.put(USE_MODEL_CLASSES, true);
+        }
+
         setLenientTypeCast(convertPropertyToBooleanAndWriteBack(LENIENT_TYPE_CAST));
 
         supportingFiles.add(new SupportingFile("Podspec.mustache",

src/main/resources/handlebars/swift4/modelObject.mustache

@@ -1,5 +1,5 @@
 
-public struct {{classname}}: Codable {
+public {{#useModelClasses}}class{{/useModelClasses}}{{^useModelClasses}}struct{{/useModelClasses}} {{classname}}: Codable {
 
 {{#allVars}}{{#is this 'enum'}}{{> modelInlineEnumDeclaration}}
 {{/is}}{{/allVars}}{{#allVars}}{{#is this 'enum'}}    {{#description}}/** {{description}} */

src/main/resources/handlebars/swift5/modelObject.mustache

@@ -1,5 +1,5 @@
 
-public struct {{classname}}: Codable {
+public {{#useModelClasses}}class{{/useModelClasses}}{{^useModelClasses}}struct{{/useModelClasses}} {{classname}}: Codable {
 
 {{#allVars}}
 {{#isEnum}}