Fix PsesDocumentFormattingHandlers

Author: andyleejordan

src/PowerShellEditorServices/Services/TextDocument/Handlers/FormattingHandlers.cs

@@ -17,6 +17,7 @@
 namespace Microsoft.PowerShell.EditorServices.Handlers
 {
     // TODO: Add IDocumentOnTypeFormatHandler to support on-type formatting.
+    // TODO: Use ABCs.
     internal class PsesDocumentFormattingHandlers : IDocumentFormattingHandler, IDocumentRangeFormattingHandler
     {
         private readonly ILogger _logger;
@@ -39,21 +40,15 @@ public PsesDocumentFormattingHandlers(
             _workspaceService = workspaceService;
         }
 
-        public DocumentFormattingRegistrationOptions GetRegistrationOptions()
+        public DocumentFormattingRegistrationOptions GetRegistrationOptions(DocumentFormattingCapability capability, ClientCapabilities clientCapabilities) => new DocumentFormattingRegistrationOptions
         {
-            return new DocumentFormattingRegistrationOptions
-            {
-                DocumentSelector = LspUtils.PowerShellDocumentSelector
-            };
-        }
+            DocumentSelector = LspUtils.PowerShellDocumentSelector
+        };
 
-        DocumentRangeFormattingRegistrationOptions IRegistration<DocumentRangeFormattingRegistrationOptions>.GetRegistrationOptions()
+        public DocumentRangeFormattingRegistrationOptions GetRegistrationOptions(DocumentRangeFormattingCapability capability, ClientCapabilities clientCapabilities) => new DocumentRangeFormattingRegistrationOptions
         {
-            return new DocumentRangeFormattingRegistrationOptions
-            {
-                DocumentSelector = LspUtils.PowerShellDocumentSelector
-            };
-        }
+            DocumentSelector = LspUtils.PowerShellDocumentSelector
+        };
 
         public async Task<TextEditContainer> Handle(DocumentFormattingParams request, CancellationToken cancellationToken)
         {