Added TemplateDefinitionExtensions.

framework/src/Volo.Abp.TextTemplating/Volo/Abp/TextTemplating/TemplateDefinitionExtensions.cs

@@ -0,0 +1,19 @@
+using JetBrains.Annotations;
+using Volo.Abp.TextTemplating.VirtualFiles;
+
+namespace Volo.Abp.TextTemplating
+{
+    public static class TemplateDefinitionExtensions
+    {
+        public static TemplateDefinition AddVirtualFiles(
+            [NotNull] this TemplateDefinition templateDefinition,
+            [NotNull] string virtualPath)
+        {
+            Check.NotNull(templateDefinition, nameof(templateDefinition));
+
+            return templateDefinition.AddContributor(
+                new VirtualFileTemplateContributor(virtualPath)
+            );
+        }
+    }
+}

framework/src/Volo.Abp.TextTemplating/Volo/Abp/TextTemplating/VirtualFiles/VirtualFileTemplateContributor.cs

@@ -1,6 +1,5 @@
 using System;
 using System.Collections.Generic;
-using System.Threading;
 using JetBrains.Annotations;
 using Microsoft.Extensions.DependencyInjection;
 using Microsoft.Extensions.FileProviders;
@@ -15,9 +14,10 @@ namespace Volo.Abp.TextTemplating.VirtualFiles
         private volatile Dictionary<string, string> _templateDictionary;
         private readonly object _syncObj = new object();
 
-        public VirtualFileTemplateContributor(string virtualPath)
+        public VirtualFileTemplateContributor(
+            [NotNull] string virtualPath)
         {
-            _virtualPath = virtualPath;
+            _virtualPath = Check.NotNullOrWhiteSpace(virtualPath, nameof(virtualPath));
         }
 
         public void Initialize(TemplateContributorInitializationContext context)

framework/test/Volo.Abp.TextTemplating.Tests/Volo/Abp/TextTemplating/TestTemplateDefinitionProvider.cs

@@ -1,6 +1,4 @@
-using Volo.Abp.TextTemplating.VirtualFiles;
-
-namespace Volo.Abp.TextTemplating
+namespace Volo.Abp.TextTemplating
 {
     public class TestTemplateDefinitionProvider : TemplateDefinitionProvider
     {
@@ -9,9 +7,7 @@ namespace Volo.Abp.TextTemplating
             context.Add(
                 new TemplateDefinition(
                     TestTemplates.TestTemplate1
-                ).AddContributor(
-                    new VirtualFileTemplateContributor("/SampleTemplates/WelcomeEmail")
-                )
+                ).AddVirtualFiles("/SampleTemplates/WelcomeEmail")
             );
 
             context.Add(new TemplateDefinition(