corrected errors reported

Author: moljac

source/androidx.activity/activity/Transforms/Metadata.xml

@@ -400,9 +400,11 @@
     </attr>
 
     <!--
-./generated/androidx.activity.activity/obj/Debug/net8.0-android/generated/src/AndroidX.Activity.Result.Contract.ActivityResultContracts.cs(883,13): error CS0266: Cannot implicitly convert type 'System.Collections.Generic.IList<Android.Net.Uri>' to 'Java.Lang.Object'. An explicit conversion exists (are you missing a cast?) [./generated/androidx.activity.activity/androidx.activity.activity.csproj::TargetFramework=net8.0-android]
-./generated/androidx.activity.activity/obj/Debug/net8.0-android/generated/src/AndroidX.Activity.Result.Contract.ActivityResultContracts.cs(1104,13): error CS0266: Cannot implicitly convert type 'System.Collections.Generic.IList<Android.Net.Uri>' to 'Java.Lang.Object'. An explicit conversion exists (are you missing a cast?) [./generated/androidx.activity.activity/androidx.activity.activity.csproj::TargetFramework=net8.0-android]
-./generated/androidx.activity.activity/obj/Debug/net8.0-android/generated/src/AndroidX.Activity.Result.Contract.ActivityResultContracts.cs(1784,13): error CS0266: Cannot implicitly convert type 'System.Collections.Generic.IDictionary<string, Java.Lang.Boolean>' to 'Java.Lang.Object'. An explicit conversion exists (are you missing a cast?) [./generated/androidx.activity.activity/androidx.activity.activity.csproj::TargetFramework=net8.0-android]
+    Problem!!!
+
+./generated/androidx.activity.activity/obj/Debug/net8.0-android/generated/src/AndroidX.Activity.Result.Contract.ActivityResultContracts.cs(526,24): error CS0534: 'ActivityResultContracts.OpenDocument' does not implement inherited abstract member 'ActivityResultContract.CreateIntent(Context, Object?)' [./generated/androidx.activity.activity/androidx.activity.activity.csproj::TargetFramework=net8.0-android]
+./generated/androidx.activity.activity/obj/Debug/net8.0-android/generated/src/AndroidX.Activity.Result.Contract.ActivityResultContracts.cs(776,24): error CS0534: 'ActivityResultContracts.OpenMultipleDocuments' does not implement inherited abstract member 'ActivityResultContract.CreateIntent(Context, Object?)' [./generated/androidx.activity.activity/androidx.activity.activity.csproj::TargetFramework=net8.0-android]
+./generated/androidx.activity.activity/obj/Debug/net8.0-android/generated/src/AndroidX.Activity.Result.Contract.ActivityResultContracts.cs(1638,31): error CS0534: 'ActivityResultContracts.RequestMultiplePermissions' does not implement inherited abstract member 'ActivityResultContract.CreateIntent(Context, Object?)' [./generated/androidx.activity.activity/androidx.activity.activity.csproj::TargetFramework=net8.0-android]
     -->
 
     <!--
@@ -412,7 +414,6 @@
 ./generated/androidx.activity.activity/obj/Debug/net8.0-android/generated/src/AndroidX.Activity.Result.Contract.ActivityResultContracts.cs(1104,13): error CS0266: Cannot implicitly convert type 'System.Collections.Generic.IList<Android.Net.Uri>' to 'Java.Lang.Object'. An explicit conversion exists (are you missing a cast?) [./generated/androidx.activity.activity/androidx.activity.activity.csproj::TargetFramework=net8.0-android]
 ./generated/androidx.activity.activity/obj/Debug/net8.0-android/generated/src/AndroidX.Activity.Result.Contract.ActivityResultContracts.cs(1784,13): error CS0266: Cannot implicitly convert type 'System.Collections.Generic.IDictionary<string, Java.Lang.Boolean>' to 'Java.Lang.Object'. An explicit conversion exists (are you missing a cast?) [./generated/androidx.activity.activity/androidx.activity.activity.csproj::TargetFramework=net8.0-android]
 
-    -->
     <attr
         path="/api/package[@name='androidx.activity.result.contract']/class[@name='ActivityResultContracts.OpenDocument']/method[@name='createIntent' and count(parameter)=2 and parameter[1][@type='android.content.Context'] and parameter[2][@type='java.lang.String[]']]/parameter[2]"
         name="managedType"
@@ -449,6 +450,7 @@
         >
         override
     </attr> 
+    -->
     <!--
     Variant B - change `type`