update to Flurl 4

FlurlX.Http.Xml.sln

@@ -0,0 +1,40 @@
+
+Microsoft Visual Studio Solution File, Format Version 12.00
+# Visual Studio Version 17
+VisualStudioVersion = 17.8.34330.188
+MinimumVisualStudioVersion = 10.0.40219.1
+Project("{2150E333-8FDC-42A3-9474-1A3956D46DE8}") = "Solution Items", "Solution Items", "{F2114366-0322-434F-91D3-A25939F0CFA7}"
+	ProjectSection(SolutionItems) = preProject
+		.gitattributes = .gitattributes
+		.gitignore = .gitignore
+		appveyor.yml = appveyor.yml
+		global.json = global.json
+		README.md = README.md
+	EndProjectSection
+EndProject
+Project("{9A19103F-16F7-4668-BE54-9A1E7A4F7556}") = "FlurlX.Http.Xml.Tests", "test\FlurlX.Http.Xml.Tests\FlurlX.Http.Xml.Tests.csproj", "{C01421A9-2746-4319-A96B-BEB21E6C349F}"
+EndProject
+Project("{9A19103F-16F7-4668-BE54-9A1E7A4F7556}") = "FlurlX.Http.Xml", "src\FlurlX.Http.Xml\FlurlX.Http.Xml.csproj", "{A9B5243D-9BB9-4F70-BF1F-A3716A5AF4CD}"
+EndProject
+Global
+	GlobalSection(SolutionConfigurationPlatforms) = preSolution
+		Debug|Any CPU = Debug|Any CPU
+		Release|Any CPU = Release|Any CPU
+	EndGlobalSection
+	GlobalSection(ProjectConfigurationPlatforms) = postSolution
+		{C01421A9-2746-4319-A96B-BEB21E6C349F}.Debug|Any CPU.ActiveCfg = Debug|Any CPU
+		{C01421A9-2746-4319-A96B-BEB21E6C349F}.Debug|Any CPU.Build.0 = Debug|Any CPU
+		{C01421A9-2746-4319-A96B-BEB21E6C349F}.Release|Any CPU.ActiveCfg = Release|Any CPU
+		{C01421A9-2746-4319-A96B-BEB21E6C349F}.Release|Any CPU.Build.0 = Release|Any CPU
+		{A9B5243D-9BB9-4F70-BF1F-A3716A5AF4CD}.Debug|Any CPU.ActiveCfg = Debug|Any CPU
+		{A9B5243D-9BB9-4F70-BF1F-A3716A5AF4CD}.Debug|Any CPU.Build.0 = Debug|Any CPU
+		{A9B5243D-9BB9-4F70-BF1F-A3716A5AF4CD}.Release|Any CPU.ActiveCfg = Release|Any CPU
+		{A9B5243D-9BB9-4F70-BF1F-A3716A5AF4CD}.Release|Any CPU.Build.0 = Release|Any CPU
+	EndGlobalSection
+	GlobalSection(SolutionProperties) = preSolution
+		HideSolutionNode = FALSE
+	EndGlobalSection
+	GlobalSection(ExtensibilityGlobals) = postSolution
+		SolutionGuid = {7B202065-8A02-433F-93A2-248DC8ABB65B}
+	EndGlobalSection
+EndGlobal

global.json

@@ -1,7 +1,7 @@
 {
   "projects": [ "src", "test" ],
   "sdk": {
-    "version": "3.1.202",
+    "version": "8.0.100",
     "rollForward": "latestFeature"
   }
 }

src/Flurl.Http.Xml/CapturedXmlContent.cs → src/FlurlX.Http.Xml/CapturedXmlContent.cs

@@ -1,6 +1,6 @@
 using Flurl.Http.Content;
 
-namespace Flurl.Http.Xml
+namespace FlurlX.Http.Xml
 {
     /// <summary>
     /// Provides HTTP content based on a serialized XML object, with the XML string captured to a property

src/FlurlX.Http.Xml/FlurlHttpSettingsExtensions.cs

@@ -0,0 +1,23 @@
+using System;
+using System.Text;
+using System.Xml;
+
+namespace FlurlX.Http.Xml
+{
+    /// <summary>
+    /// FlurlHttpSettingsExtensions
+    /// </summary>
+    public static class FlurlHttpSettingsExtensions
+    {
+        private static XmlWriterSettings s_xmlWriterSettings = new XmlWriterSettings { Encoding = new UTF8Encoding(false, false), Indent = true, OmitXmlDeclaration = false };
+        private static readonly Lazy<MicrosoftXmlSerializer> s_xmlSerializerInstance = new Lazy<MicrosoftXmlSerializer>(() => new MicrosoftXmlSerializer(s_xmlWriterSettings));
+
+        /// <summary>
+        /// XMLs the serializer.
+        /// </summary>
+        public static MicrosoftXmlSerializer XmlSerializer()
+        {
+            return s_xmlSerializerInstance.Value;
+        }
+    }
+}