added createPdf ios webview method, fixed null config takeScreenshot android exception

CHANGELOG.md

@@ -5,12 +5,12 @@
 - Added `allowUniversalAccessFromFileURLs` and `allowFileAccessFromFileURLs` WebView options also for iOS (also thanks to [liranhao](https://github.com/liranhao))
 - Added limited cookies support on iOS below 11.0 using JavaScript
 - Added `IOSCookieManager` class and `CookieManager.instance().ios.getAllCookies` iOS-specific method
-- Added `UserScript`, `UserScriptInjectionTime`, `ContentWorld`, `AndroidWebViewFeature`, `AndroidServiceWorkerController`, `AndroidServiceWorkerClient`, `ScreenshotConfiguration` classes
+- Added `UserScript`, `UserScriptInjectionTime`, `ContentWorld`, `AndroidWebViewFeature`, `AndroidServiceWorkerController`, `AndroidServiceWorkerClient`, `ScreenshotConfiguration`, `IOSWKPDFConfiguration` classes
 - Added `initialUserScripts` WebView option
 - Added `addUserScript`, `addUserScripts`, `removeUserScript`, `removeUserScripts`, `removeAllUserScripts`, `callAsyncJavaScript` WebView methods
 - Added `contentWorld` argument to `evaluateJavascript` WebView method
-- Added `isDirectionalLockEnabled`, `mediaType`, `pageZoom`, `limitsNavigationsToAppBoundDomains` iOS-specific webview options
+- Added `isDirectionalLockEnabled`, `mediaType`, `pageZoom`, `limitsNavigationsToAppBoundDomains` iOS-specific WebView options
-- Added `handlesURLScheme` iOS-specific webview method
+- Added `handlesURLScheme`, `createPdf` iOS-specific WebView methods
 - Added `iosAnimated` optional argument to `zoomBy` WebView method
 - Added `screenshotConfiguration` optional argument to `takeScreenshot` WebView method
 - Updated integration tests

README.md

@@ -449,7 +449,7 @@ Screenshots:
 * `setContextMenu(ContextMenu contextMenu)`: Sets or updates the WebView context menu to be used next time it will appear.
 * `setOptions({required InAppWebViewGroupOptions options})`: Sets the WebView options with the new options and evaluates them.
 * `stopLoading`: Stops the WebView from loading.
-* `takeScreenshot`: Takes a screenshot (in PNG format) of the WebView's visible viewport and returns a `Uint8List`. Returns `null` if it wasn't be able to take it.
+* `takeScreenshot({ScreenshotConfiguration? screenshotConfiguration})`: Takes a screenshot (in PNG format) of the WebView's visible viewport and returns a `Uint8List`. Returns `null` if it wasn't be able to take it.
 * `zoomBy({required double zoomFactor, bool iosAnimated = false})`: Performs a zoom operation in this WebView.
 * `static getDefaultUserAgent`: Gets the default user agent.
 
@@ -493,6 +493,7 @@ Android-specific methods can be called using the `InAppWebViewController.android
 
 iOS-specific methods can be called using the `InAppWebViewController.ios` attribute. Static methods can be called using the `IOSInAppWebViewController` class directly.
 
+* `createPdf({IOSWKPDFConfiguration? iosWKPdfConfiguration})`: Generates PDF data from the web view’s contents asynchronously.
 * `hasOnlySecureContent`: A Boolean value indicating whether all resources on the page have been loaded over securely encrypted connections.
 * `reloadFromOrigin`: Reloads the current page, performing end-to-end revalidation using cache-validating conditionals if possible.
 * `static handlesURLScheme(String urlScheme)`: Returns a Boolean value that indicates whether WebKit natively supports resources with the specified URL scheme.

android/src/main/java/com/pichillilorenzo/flutter_inappwebview/InAppWebView/InAppWebView.java

@@ -1132,7 +1132,7 @@ final public class InAppWebView extends InputAwareWebView {
     WebStorage.getInstance().deleteAllData();
   }
 
-  public void takeScreenshot(final Map<String, Object> screenshotConfiguration, final MethodChannel.Result result) {
+  public void takeScreenshot(final @Nullable Map<String, Object> screenshotConfiguration, final MethodChannel.Result result) {
     headlessHandler.post(new Runnable() {
       @Override
       public void run() {
@@ -1163,6 +1163,11 @@ final public class InAppWebView extends InputAwareWebView {
 
           Bitmap resized = Bitmap.createBitmap(b, rectX, rectY, rectWidth, rectHeight);
 
+          ByteArrayOutputStream byteArrayOutputStream = new ByteArrayOutputStream();
+          Bitmap.CompressFormat compressFormat = Bitmap.CompressFormat.PNG;
+          int quality = 100;
+
+          if (screenshotConfiguration != null) {
             Map<String, Double> rect = (Map<String, Double>) screenshotConfiguration.get("rect");
             if (rect != null) {
               rectX = (int) Math.floor(rect.get("x") * scale + 0.5);
@@ -1185,18 +1190,18 @@ final public class InAppWebView extends InputAwareWebView {
               resized = Bitmap.createScaledBitmap(resized, dstWidth, dstHeight, true);
             }
 
-          ByteArrayOutputStream byteArrayOutputStream = new ByteArrayOutputStream();
-
-          Bitmap.CompressFormat compressFormat = Bitmap.CompressFormat.PNG;
             try {
               compressFormat = Bitmap.CompressFormat.valueOf((String) screenshotConfiguration.get("compressFormat"));
             } catch (IllegalArgumentException e) {
               e.printStackTrace();
             }
 
+            quality = (Integer) screenshotConfiguration.get("quality");
+          }
+
           resized.compress(
                   compressFormat,
-                  (Integer) screenshotConfiguration.get("quality"),
+                  quality,
                   byteArrayOutputStream);
 
           try {

example/.flutter-plugins-dependencies

@@ -1 +1 @@
-{"info":"This is a generated file; do not edit or check into version control.","plugins":{"ios":[{"name":"device_info","path":"/Users/lorenzopichilli/flutter/.pub-cache/hosted/pub.dartlang.org/device_info-2.0.0-nullsafety.2/","dependencies":[]},{"name":"flutter_downloader","path":"/Users/lorenzopichilli/flutter/.pub-cache/hosted/pub.dartlang.org/flutter_downloader-1.5.2/","dependencies":[]},{"name":"flutter_inappwebview","path":"/Users/lorenzopichilli/Desktop/flutter_inappwebview/","dependencies":["device_info"]},{"name":"integration_test","path":"/Users/lorenzopichilli/flutter/.pub-cache/git/plugins-16f3281b04b0db12e609352b1c9544901392e428/packages/integration_test/","dependencies":[]},{"name":"path_provider","path":"/Users/lorenzopichilli/flutter/.pub-cache/hosted/pub.dartlang.org/path_provider-1.6.27/","dependencies":[]},{"name":"permission_handler","path":"/Users/lorenzopichilli/flutter/.pub-cache/hosted/pub.dartlang.org/permission_handler-5.0.1+1/","dependencies":[]},{"name":"url_launcher","path":"/Users/lorenzopichilli/flutter/.pub-cache/hosted/pub.dartlang.org/url_launcher-6.0.0-nullsafety.4/","dependencies":[]}],"android":[{"name":"device_info","path":"/Users/lorenzopichilli/flutter/.pub-cache/hosted/pub.dartlang.org/device_info-2.0.0-nullsafety.2/","dependencies":[]},{"name":"flutter_downloader","path":"/Users/lorenzopichilli/flutter/.pub-cache/hosted/pub.dartlang.org/flutter_downloader-1.5.2/","dependencies":[]},{"name":"flutter_inappwebview","path":"/Users/lorenzopichilli/Desktop/flutter_inappwebview/","dependencies":["device_info"]},{"name":"integration_test","path":"/Users/lorenzopichilli/flutter/.pub-cache/git/plugins-16f3281b04b0db12e609352b1c9544901392e428/packages/integration_test/","dependencies":[]},{"name":"path_provider","path":"/Users/lorenzopichilli/flutter/.pub-cache/hosted/pub.dartlang.org/path_provider-1.6.27/","dependencies":[]},{"name":"permission_handler","path":"/Users/lorenzopichilli/flutter/.pub-cache/hosted/pub.dartlang.org/permission_handler-5.0.1+1/","dependencies":[]},{"name":"url_launcher","path":"/Users/lorenzopichilli/flutter/.pub-cache/hosted/pub.dartlang.org/url_launcher-6.0.0-nullsafety.4/","dependencies":[]}],"macos":[{"name":"path_provider_macos","path":"/Users/lorenzopichilli/flutter/.pub-cache/hosted/pub.dartlang.org/path_provider_macos-0.0.4+8/","dependencies":[]},{"name":"url_launcher_macos","path":"/Users/lorenzopichilli/flutter/.pub-cache/hosted/pub.dartlang.org/url_launcher_macos-0.1.0-nullsafety.2/","dependencies":[]}],"linux":[{"name":"path_provider_linux","path":"/Users/lorenzopichilli/flutter/.pub-cache/hosted/pub.dartlang.org/path_provider_linux-0.0.1+2/","dependencies":[]},{"name":"url_launcher_linux","path":"/Users/lorenzopichilli/flutter/.pub-cache/hosted/pub.dartlang.org/url_launcher_linux-0.1.0-nullsafety.3/","dependencies":[]}],"windows":[{"name":"path_provider_windows","path":"/Users/lorenzopichilli/flutter/.pub-cache/hosted/pub.dartlang.org/path_provider_windows-0.0.4+3/","dependencies":[]},{"name":"url_launcher_windows","path":"/Users/lorenzopichilli/flutter/.pub-cache/hosted/pub.dartlang.org/url_launcher_windows-0.1.0-nullsafety.2/","dependencies":[]}],"web":[]},"dependencyGraph":[{"name":"device_info","dependencies":[]},{"name":"flutter_downloader","dependencies":[]},{"name":"flutter_inappwebview","dependencies":["device_info"]},{"name":"integration_test","dependencies":[]},{"name":"path_provider","dependencies":["path_provider_macos","path_provider_linux","path_provider_windows"]},{"name":"path_provider_linux","dependencies":[]},{"name":"path_provider_macos","dependencies":[]},{"name":"path_provider_windows","dependencies":[]},{"name":"permission_handler","dependencies":[]},{"name":"url_launcher","dependencies":["url_launcher_linux","url_launcher_macos","url_launcher_windows"]},{"name":"url_launcher_linux","dependencies":[]},{"name":"url_launcher_macos","dependencies":[]},{"name":"url_launcher_windows","dependencies":[]}],"date_created":"2021-02-08 01:11:20.039088","version":"1.26.0-18.0.pre.90"}
+{"info":"This is a generated file; do not edit or check into version control.","plugins":{"ios":[{"name":"device_info","path":"/Users/lorenzopichilli/flutter/.pub-cache/hosted/pub.dartlang.org/device_info-2.0.0-nullsafety.2/","dependencies":[]},{"name":"flutter_downloader","path":"/Users/lorenzopichilli/flutter/.pub-cache/hosted/pub.dartlang.org/flutter_downloader-1.5.2/","dependencies":[]},{"name":"flutter_inappwebview","path":"/Users/lorenzopichilli/Desktop/flutter_inappwebview/","dependencies":["device_info"]},{"name":"integration_test","path":"/Users/lorenzopichilli/flutter/.pub-cache/git/plugins-16f3281b04b0db12e609352b1c9544901392e428/packages/integration_test/","dependencies":[]},{"name":"path_provider","path":"/Users/lorenzopichilli/flutter/.pub-cache/hosted/pub.dartlang.org/path_provider-1.6.27/","dependencies":[]},{"name":"permission_handler","path":"/Users/lorenzopichilli/flutter/.pub-cache/hosted/pub.dartlang.org/permission_handler-5.0.1+1/","dependencies":[]},{"name":"url_launcher","path":"/Users/lorenzopichilli/flutter/.pub-cache/hosted/pub.dartlang.org/url_launcher-6.0.0-nullsafety.4/","dependencies":[]}],"android":[{"name":"device_info","path":"/Users/lorenzopichilli/flutter/.pub-cache/hosted/pub.dartlang.org/device_info-2.0.0-nullsafety.2/","dependencies":[]},{"name":"flutter_downloader","path":"/Users/lorenzopichilli/flutter/.pub-cache/hosted/pub.dartlang.org/flutter_downloader-1.5.2/","dependencies":[]},{"name":"flutter_inappwebview","path":"/Users/lorenzopichilli/Desktop/flutter_inappwebview/","dependencies":["device_info"]},{"name":"integration_test","path":"/Users/lorenzopichilli/flutter/.pub-cache/git/plugins-16f3281b04b0db12e609352b1c9544901392e428/packages/integration_test/","dependencies":[]},{"name":"path_provider","path":"/Users/lorenzopichilli/flutter/.pub-cache/hosted/pub.dartlang.org/path_provider-1.6.27/","dependencies":[]},{"name":"permission_handler","path":"/Users/lorenzopichilli/flutter/.pub-cache/hosted/pub.dartlang.org/permission_handler-5.0.1+1/","dependencies":[]},{"name":"url_launcher","path":"/Users/lorenzopichilli/flutter/.pub-cache/hosted/pub.dartlang.org/url_launcher-6.0.0-nullsafety.4/","dependencies":[]}],"macos":[{"name":"path_provider_macos","path":"/Users/lorenzopichilli/flutter/.pub-cache/hosted/pub.dartlang.org/path_provider_macos-0.0.4+8/","dependencies":[]},{"name":"url_launcher_macos","path":"/Users/lorenzopichilli/flutter/.pub-cache/hosted/pub.dartlang.org/url_launcher_macos-0.1.0-nullsafety.2/","dependencies":[]}],"linux":[{"name":"path_provider_linux","path":"/Users/lorenzopichilli/flutter/.pub-cache/hosted/pub.dartlang.org/path_provider_linux-0.0.1+2/","dependencies":[]},{"name":"url_launcher_linux","path":"/Users/lorenzopichilli/flutter/.pub-cache/hosted/pub.dartlang.org/url_launcher_linux-0.1.0-nullsafety.3/","dependencies":[]}],"windows":[{"name":"path_provider_windows","path":"/Users/lorenzopichilli/flutter/.pub-cache/hosted/pub.dartlang.org/path_provider_windows-0.0.4+3/","dependencies":[]},{"name":"url_launcher_windows","path":"/Users/lorenzopichilli/flutter/.pub-cache/hosted/pub.dartlang.org/url_launcher_windows-0.1.0-nullsafety.2/","dependencies":[]}],"web":[]},"dependencyGraph":[{"name":"device_info","dependencies":[]},{"name":"flutter_downloader","dependencies":[]},{"name":"flutter_inappwebview","dependencies":["device_info"]},{"name":"integration_test","dependencies":[]},{"name":"path_provider","dependencies":["path_provider_macos","path_provider_linux","path_provider_windows"]},{"name":"path_provider_linux","dependencies":[]},{"name":"path_provider_macos","dependencies":[]},{"name":"path_provider_windows","dependencies":[]},{"name":"permission_handler","dependencies":[]},{"name":"url_launcher","dependencies":["url_launcher_linux","url_launcher_macos","url_launcher_windows"]},{"name":"url_launcher_linux","dependencies":[]},{"name":"url_launcher_macos","dependencies":[]},{"name":"url_launcher_windows","dependencies":[]}],"date_created":"2021-02-08 18:26:05.315620","version":"1.26.0-18.0.pre.90"}

example/ios/Flutter/Flutter.podspec

@@ -0,0 +1,18 @@
+#
+# NOTE: This podspec is NOT to be published. It is only used as a local source!
+#       This is a generated file; do not edit or check into version control.
+#
+
+Pod::Spec.new do |s|
+  s.name             = 'Flutter'
+  s.version          = '1.0.0'
+  s.summary          = 'High-performance, high-fidelity mobile apps.'
+  s.homepage         = 'https://flutter.io'
+  s.license          = { :type => 'MIT' }
+  s.author           = { 'Flutter Dev Team' => 'flutter-dev@googlegroups.com' }
+  s.source           = { :git => 'https://github.com/flutter/engine', :tag => s.version.to_s }
+  s.ios.deployment_target = '8.0'
+  # Framework linking is handled by Flutter tooling, not CocoaPods.
+  # Add a placeholder to satisfy `s.dependency 'Flutter'` plugin podspecs.
+  s.vendored_frameworks = 'path/to/nothing'
+end

example/ios/Flutter/flutter_export_environment.sh

@@ -2,12 +2,14 @@
 # This is a generated file; do not edit or check into version control.
 export "FLUTTER_ROOT=/Users/lorenzopichilli/flutter"
 export "FLUTTER_APPLICATION_PATH=/Users/lorenzopichilli/Desktop/flutter_inappwebview/example"
-export "FLUTTER_TARGET=lib/main.dart"
+export "FLUTTER_TARGET=/Users/lorenzopichilli/Desktop/flutter_inappwebview/example/lib/main.dart"
 export "FLUTTER_BUILD_DIR=build"
 export "SYMROOT=${SOURCE_ROOT}/../build/ios"
 export "FLUTTER_BUILD_NAME=1.0.0"
 export "FLUTTER_BUILD_NUMBER=1"
+export "DART_DEFINES=flutter.inspector.structuredErrors%3Dtrue,FLUTTER_WEB_AUTO_DETECT%3Dtrue"
 export "DART_OBFUSCATION=false"
-export "TRACK_WIDGET_CREATION=false"
+export "EXTRA_FRONT_END_OPTIONS=--no-sound-null-safety"
+export "TRACK_WIDGET_CREATION=true"
 export "TREE_SHAKE_ICONS=false"
-export "PACKAGE_CONFIG=.packages"
+export "PACKAGE_CONFIG=/Users/lorenzopichilli/Desktop/flutter_inappwebview/example/.dart_tool/package_config.json"

example/ios/Runner.xcodeproj/project.pbxproj

@@ -9,7 +9,7 @@
 /* Begin PBXBuildFile section */
 		020EF14E4245221B2C22ACE5 /* Pods_Runner.framework in Frameworks */ = {isa = PBXBuildFile; fileRef = B0FC2CF7A6002799890B3102 /* Pods_Runner.framework */; };
 		1498D2341E8E89220040F4C2 /* GeneratedPluginRegistrant.m in Sources */ = {isa = PBXBuildFile; fileRef = 1498D2331E8E89220040F4C2 /* GeneratedPluginRegistrant.m */; };
-		25A517508F43E58C47090625 /* (null) in Frameworks */ = {isa = PBXBuildFile; };
+		25A517508F43E58C47090625 /* BuildFile in Frameworks */ = {isa = PBXBuildFile; };
 		3B3967161E833CAA004F5970 /* AppFrameworkInfo.plist in Resources */ = {isa = PBXBuildFile; fileRef = 3B3967151E833CAA004F5970 /* AppFrameworkInfo.plist */; };
 		61FF730023634CA10069C557 /* libsqlite3.tbd in Frameworks */ = {isa = PBXBuildFile; fileRef = 61FF72FF23634CA10069C557 /* libsqlite3.tbd */; };
 		74858FAF1ED2DC5600515810 /* AppDelegate.swift in Sources */ = {isa = PBXBuildFile; fileRef = 74858FAE1ED2DC5600515810 /* AppDelegate.swift */; };
@@ -58,7 +58,7 @@
 			buildActionMask = 2147483647;
 			files = (
 				61FF730023634CA10069C557 /* libsqlite3.tbd in Frameworks */,
-				25A517508F43E58C47090625 /* (null) in Frameworks */,
+				25A517508F43E58C47090625 /* BuildFile in Frameworks */,
 				020EF14E4245221B2C22ACE5 /* Pods_Runner.framework in Frameworks */,
 			);
 			runOnlyForDeploymentPostprocessing = 0;
@@ -262,6 +262,7 @@
 				"${BUILT_PRODUCTS_DIR}/flutter_inappwebview/flutter_inappwebview.framework",
 				"${BUILT_PRODUCTS_DIR}/integration_test/integration_test.framework",
 				"${BUILT_PRODUCTS_DIR}/path_provider/path_provider.framework",
+				"${BUILT_PRODUCTS_DIR}/pdf_viewer_plugin/pdf_viewer_plugin.framework",
 				"${BUILT_PRODUCTS_DIR}/url_launcher/url_launcher.framework",
 			);
 			name = "[CP] Embed Pods Frameworks";
@@ -271,6 +272,7 @@
 				"${TARGET_BUILD_DIR}/${FRAMEWORKS_FOLDER_PATH}/flutter_inappwebview.framework",
 				"${TARGET_BUILD_DIR}/${FRAMEWORKS_FOLDER_PATH}/integration_test.framework",
 				"${TARGET_BUILD_DIR}/${FRAMEWORKS_FOLDER_PATH}/path_provider.framework",
+				"${TARGET_BUILD_DIR}/${FRAMEWORKS_FOLDER_PATH}/pdf_viewer_plugin.framework",
 				"${TARGET_BUILD_DIR}/${FRAMEWORKS_FOLDER_PATH}/url_launcher.framework",
 			);
 			runOnlyForDeploymentPostprocessing = 0;

example/lib/in_app_webiew_example.screen.dart

@@ -138,6 +138,7 @@ class _InAppWebViewExampleScreenState extends State<InAppWebViewExampleScreen> {
                       setState(() {
                         this.url = url ?? '';
                       });
+
                       // RenderObject renderBox = webViewKey.currentContext!.findRenderObject()!;
                       // print(renderBox.paintBounds.size);
                     },

ios/Classes/InAppWebView.swift

@@ -1742,6 +1742,30 @@ public class InAppWebView: WKWebView, UIScrollViewDelegate, WKUIDelegate, WKNavi
         }
     }
     
+    public func createPdf (configuration: [String: Any?]?, completionHandler: @escaping (_ pdf: Data?) -> Void) {
+        if #available(iOS 14.0, *) {
+            let pdfConfiguration: WKPDFConfiguration = .init()
+            if let configuration = configuration {
+                if let rect = configuration["rect"] as? [String: Double] {
+                    pdfConfiguration.rect = CGRect(x: rect["x"]!, y: rect["y"]!, width: rect["width"]!, height: rect["height"]!)
+                }
+            }
+            createPDF(configuration: pdfConfiguration) { (result) in
+                switch (result) {
+                case .success(let data):
+                    completionHandler(data)
+                    return
+                case .failure(let error):
+                    print(error.localizedDescription)
+                    completionHandler(nil)
+                    return
+                }
+            }
+        } else {
+            completionHandler(nil)
+        }
+    }
+    
     public func loadUrl(url: URL, headers: [String: String]?) {
         var request = URLRequest(url: url)
         currentURL = url

ios/Classes/InAppWebViewMethodHandler.swift

@@ -402,6 +402,17 @@ class InAppWebViewMethodHandler: FlutterMethodCallDelegate {
                     result(nil)
                 }
                 break
+            case "createPdf":
+                if webView != nil {
+                    let configuration = arguments!["iosWKPdfConfiguration"] as? [String: Any?]
+                    webView!.createPdf(configuration: configuration, completionHandler: { (pdf) -> Void in
+                        result(pdf)
+                    })
+                }
+                else {
+                    result(nil)
+                }
+                break
             default:
                 result(FlutterMethodNotImplemented)
                 break

lib/src/in_app_webview_controller.dart

@@ -2336,6 +2336,15 @@ class IOSInAppWebViewController {
         .invokeMethod('hasOnlySecureContent', args);
   }
 
+  ///Generates PDF data from the web view’s contents asynchronously.
+  ///
+  ///[iosWKPdfConfiguration] represents the object that specifies the portion of the web view to capture as PDF data.
+  Future<Uint8List?> createPdf({IOSWKPDFConfiguration? iosWKPdfConfiguration}) async {
+    Map<String, dynamic> args = <String, dynamic>{};
+    args.putIfAbsent('iosWKPdfConfiguration', () => iosWKPdfConfiguration?.toMap());
+    return await _controller._channel.invokeMethod('createPdf', args);
+  }
+
   ///Returns a Boolean value that indicates whether WebKit natively supports resources with the specified URL scheme.
   ///
   ///[urlScheme] represents the URL scheme associated with the resource.

lib/src/types.dart

@@ -4846,3 +4846,31 @@ class ScreenshotConfiguration {
     return toMap().toString();
   }
 }
+
+///An iOS-specific class that represents the configuration data to use when generating a PDF representation of a web view’s contents.
+///
+///**NOTE**: available on iOS 14.0+.
+class IOSWKPDFConfiguration {
+  ///The portion of your web view to capture, specified as a rectangle in the view’s coordinate system.
+  ///The default value of this property is `null`, which captures everything in the view’s bounds rectangle.
+  ///If you specify a custom rectangle, it must lie within the bounds rectangle of the [WebView] object.
+  InAppWebViewRect? rect;
+
+  IOSWKPDFConfiguration({
+    this.rect});
+
+  Map<String, dynamic> toMap() {
+    return {
+      "rect": rect?.toMap()
+    };
+  }
+
+  Map<String, dynamic> toJson() {
+    return this.toMap();
+  }
+
+  @override
+  String toString() {
+    return toMap().toString();
+  }
+}