feat(golang): support for wrapped and xml name

Author: sruehl

modules/openapi-generator/src/main/java/org/openapitools/codegen/languages/AbstractGoCodegen.java

@@ -800,6 +800,9 @@ public ModelsMap postProcessModels(ModelsMap objs) {
 
                 if (withXml) {
                     goDataTag += " xml:" + "\"" + cp.baseName;
+                    if (cp.isXmlWrapped) {
+                        goDataTag += ">" + ("".equals(cp.xmlName) ? cp.baseName : cp.xmlName);
+                    }
                     if (cp.isXmlAttribute) {
                         goDataTag += ",attr";
                     }

modules/openapi-generator/src/test/java/org/openapitools/codegen/go/GoClientCodegenTest.java

@@ -396,4 +396,26 @@ public void testAdditionalPropertiesWithoutGoMod() throws Exception {
         Path goSumFile = Paths.get(output + "/go.sum");
         TestUtils.assertFileNotExists(goSumFile);
     }
+
+    @Test
+    public void testXmlOptionsBeingUsed() throws IOException {
+        Map<String, Object> properties = new HashMap<>();
+        properties.put(GoClientCodegen.STRUCT_PREFIX, true);
+        properties.put(GoClientCodegen.WITH_XML, true);
+
+        File output = Files.createTempDirectory("test").toFile();
+        output.deleteOnExit();
+
+        final CodegenConfigurator configurator = new CodegenConfigurator()
+                .setGeneratorName("go")
+                .setAdditionalProperties(properties)
+                .setInputSpec("src/test/resources/3_0/petstore.yaml")
+                .setOutputDir(output.getAbsolutePath().replace("\\", "/"));
+
+        DefaultGenerator generator = new DefaultGenerator();
+        List<File> files = generator.opts(configurator.toClientOptInput()).generate();
+        files.forEach(File::deleteOnExit);
+
+        TestUtils.assertFileContains(Paths.get(output + "/model_pet.go"), "tags>tag");
+    }
 }