Specialized collectoin

src/Features/CSharp/Portable/Debugging/BreakpointResolver.cs

@@ -92,7 +92,7 @@ protected override void ParseText(
         }
         else
         {
-            nameParts = SpecializedCollections.EmptyList<NameAndArity>();
+            nameParts = [];
         }
     }
 }

src/Features/CSharp/Portable/SignatureHelp/AbstractCSharpSignatureHelpProvider.cs

@@ -77,5 +77,5 @@ protected static SignatureHelpSymbolParameter Convert(
 #pragma warning disable CA1822 // Mark members as static - see obsolete message above.
     protected IList<TaggedText> GetAwaitableUsage(IMethodSymbol method, SemanticModel semanticModel, int position)
 #pragma warning restore CA1822 // Mark members as static
-        => SpecializedCollections.EmptyList<TaggedText>();
+        => [];
 }

src/Features/CSharp/Portable/UsePatternMatching/CSharpIsAndCastCheckWithoutNameDiagnosticAnalyzer.cs

@@ -102,7 +102,7 @@ private void SyntaxNodeAction(
                 Descriptor, isExpression.GetLocation(),
                 styleOption.Notification,
                 context.Options,
-                SpecializedCollections.EmptyCollection<Location>(),
+                additionalLocations: [],
                 ImmutableDictionary<string, string?>.Empty));
     }
 

src/Features/CSharpTest/Diagnostics/Suppression/SuppressionTests.cs

@@ -455,8 +455,8 @@ void Method()
                         new CodeChangeProviderMetadata("SuppressionProvider", languages: [LanguageNames.CSharp]));
                     var fixService = new CodeFixService(
                         diagnosticService,
-                        SpecializedCollections.EmptyEnumerable<Lazy<IErrorLoggerService>>(),
-                        SpecializedCollections.EmptyEnumerable<Lazy<CodeFixProvider, CodeChangeProviderMetadata>>(),
+                        loggers: [],
+                        fixers: [],
                         [suppressionProviderFactory]);
                     var document = GetDocumentAndSelectSpan(workspace, out var span);
                     var diagnostics = await diagnosticService.GetDiagnosticsForSpanAsync(document, span, CancellationToken.None);

src/Features/Core/Portable/GenerateType/AbstractGenerateTypeService.Editor.cs

@@ -480,9 +480,7 @@ private async Task<ImmutableArray<CodeActionOperation>> GetGenerateIntoExistingD
         {
             string includeUsingsOrImports = null;
             if (!areFoldersValidIdentifiers)
-            {
-                folders = SpecializedCollections.EmptyList<string>();
-            }
+                folders = [];
 
             // Now actually create the symbol that we want to add to the root namespace.  The
             // symbol may either be a named type (if we're not generating into a namespace) or

src/Features/Core/Portable/Shared/Utilities/SupportedPlatformData.cs

@@ -23,9 +23,7 @@ internal sealed class SupportedPlatformData(Solution solution, List<ProjectId> i
     public IList<SymbolDisplayPart> ToDisplayParts()
     {
         if (InvalidProjects == null || InvalidProjects.Count == 0)
-        {
-            return SpecializedCollections.EmptyList<SymbolDisplayPart>();
-        }
+            return [];
 
         var builder = new List<SymbolDisplayPart>();
         builder.AddLineBreak();