[C#][netcore] replace tabs with 4-space (#7456)

* replace tab with 4-space

* add space after if

Author: wing328

modules/openapi-generator/src/main/java/org/openapitools/codegen/languages/CSharpNetCoreClientCodegen.java

@@ -23,6 +23,7 @@
 import org.openapitools.codegen.*;
 import org.openapitools.codegen.meta.features.*;
 import org.openapitools.codegen.utils.ModelUtils;
+import org.openapitools.codegen.utils.ProcessUtils;
 import org.slf4j.Logger;
 import org.slf4j.LoggerFactory;
 
@@ -610,7 +611,9 @@ public void processOpts() {
         supportingFiles.add(new SupportingFile("OpenAPIDateConverter.mustache", clientPackageDir, "OpenAPIDateConverter.cs"));
         supportingFiles.add(new SupportingFile("ClientUtils.mustache", clientPackageDir, "ClientUtils.cs"));
         supportingFiles.add(new SupportingFile("HttpMethod.mustache", clientPackageDir, "HttpMethod.cs"));
-        supportingFiles.add(new SupportingFile("HTTPSigningConfiguration.mustache",clientPackageDir,"HTTPSigningConfiguration.cs"));
+        if (ProcessUtils.hasHttpSignatureMethods(openAPI)) {
+            supportingFiles.add(new SupportingFile("HTTPSigningConfiguration.mustache", clientPackageDir, "HTTPSigningConfiguration.cs"));
+        }
         if (supportsAsync) {
             supportingFiles.add(new SupportingFile("IAsynchronousClient.mustache", clientPackageDir, "IAsynchronousClient.cs"));
         }

modules/openapi-generator/src/main/resources/csharp-netcore/Configuration.mustache

@@ -94,9 +94,9 @@ namespace {{packageName}}.Client
         {{/servers.0}}
 
         /// <summary>
-		/// HTTPSigning configuration
-		/// </summary>
-		private HTTPSigningConfiguration _HTTPSigningConfiguration = null;
+        /// HTTPSigning configuration
+        /// </summary>
+        private HTTPSigningConfiguration _HTTPSigningConfiguration = null;
         #endregion Private Members
 
         #region Constructors
@@ -469,13 +469,13 @@ namespace {{packageName}}.Client
         {{/servers.0}}
 
         /// <summary>
-		/// Gets and Sets the HTTPSigningConfiuration
-		/// </summary>
-		public HTTPSigningConfiguration HTTPSigningConfiguration
-		{
-			get { return _HTTPSigningConfiguration; }
-			set { _HTTPSigningConfiguration = value; }
-		}
+        /// Gets and Sets the HTTPSigningConfiuration
+        /// </summary>
+        public HTTPSigningConfiguration HTTPSigningConfiguration
+        {
+            get { return _HTTPSigningConfiguration; }
+            set { _HTTPSigningConfiguration = value; }
+        }
 
         #endregion Properties