Inline response schemas with additionalProperties with boolean values are no longer ignored

modules/swagger-codegen/src/main/java/io/swagger/codegen/InlineModelResolver.java

@@ -163,6 +163,10 @@ public void flatten(Swagger swagger) {
                                                 swagger.addDefinition(modelName, innerModel);
                                             }
                                         }
+                                    } else if (innerProperty instanceof UntypedProperty) {
+                                        Model mapModel = new PropertyModelConverter().propertyToModel(mp);
+                                        response.setResponseSchema(mapModel);
+                                        swagger.addDefinition(mp.getName(), mapModel);
                                     }
                                 }
                             }

modules/swagger-codegen/src/test/java/io/swagger/codegen/CodegenTest.java

@@ -14,6 +14,17 @@
 
 public class CodegenTest {
 
+    @Test(description = "handle boolean additionalProperties in embedded model")
+    public void booleanAdditionalPropertiesTest() {
+        final Swagger model = parseAndPrepareSwagger("src/test/resources/2_0/additionalProperties.json");
+        final DefaultCodegen codegen = new DefaultCodegen();
+        final String path = "/user/email/v1";
+        final Operation p = model.getPaths().get(path).getPost();
+        final CodegenOperation op = codegen.fromOperation(path, "post", p, model.getDefinitions());
+
+        Assert.assertEquals(model.getDefinitions().size(), 2);
+    }
+
     @Test(description = "handle simple composition")
     public void  propertiesInComposedModelTest() {
         final Swagger swagger = parseAndPrepareSwagger("src/test/resources/2_0/allOfProperties.yaml");

modules/swagger-codegen/src/test/resources/2_0/additionalProperties.json

@@ -0,0 +1,75 @@
+{
+  "info": {
+  },
+  "paths": {
+    "/user/email/v1": {
+      "post": {
+        "description": "email address",
+        "operationId": "post_user_email_v1",
+        "parameters": [
+          {
+            "description": "The future business user's email address. AdditionalProperties are allowed in order to accept utm_params",
+            "in": "body",
+            "name": "body",
+            "required": true,
+            "schema": {
+              "additionalProperties": true,
+              "properties": {
+                "enc_email_addr": {
+                  "description": "An email address",
+                  "type": "string"
+                },
+                "utm_campaign": {
+                  "description": "(Optional) The campaign of the request, provided by the deep link URL",
+                  "type": "string"
+                }
+              },
+              "required": [
+                "enc_email_addr"
+              ],
+              "type": "object",
+              "x-model": "PostUserEmailV1_RequestData"
+            }
+          }
+        ],
+        "responses": {
+          "200": {
+            "description": "A successful request will return a email address",
+            "examples": {
+              "application/json": {
+                "email": "testuser@example.com"
+              }
+            },
+            "schema": {
+              "additionalProperties": false,
+              "properties": {
+                "email": {
+                  "description": "Email address",
+                  "type": "string"
+                }
+              },
+              "required": [
+                "email"
+              ],
+              "type": "object",
+              "x-model": "PostUserEmailV1_ResponseData"
+            }
+          },
+          "default": {
+            "description": "Error response",
+            "schema": {
+              "$ref": "#/definitions/ErrorResponse"
+            }
+          }
+        }
+      }
+    }
+  },
+  "produces": [
+    "application/json"
+  ],
+  "schemes": [
+    "http"
+  ],
+  "swagger": "2.0"
+}