Address review comments

src/Features/Core/Portable/Completion/Providers/ImportCompletionProvider/ExtensionMethodImportCompletionHelper.cs

@@ -237,7 +237,7 @@ private static string GetReceiverTypeName(ITypeSymbol typeSymbol)
 
             return completionItemsbuilder.ToImmutable();
 
-            // Add string represent complex types (i.e. "" and "[]") to the receiver type, so we would include in the filter
+            // Add strings represent complex types (i.e. "" and "[]") to the receiver type, so we would include in the filter
             // info about extension methods with complex receiver type.
             static ImmutableArray<string> AttachComplexTypes(ImmutableArray<string> receiverTypeNames)
             {
@@ -268,8 +268,8 @@ static ImmutableArray<string> AttachComplexTypes(ImmutableArray<string> receiver
                 // Need to find the matching one in current compilation
                 // before any further checks is done.
                 var methodSymbolInCurrentCompilation = isSymbolFromCurrentCompilation
-                                                        ? methodSymbol
-                                                        : SymbolFinder.FindSimilarSymbols(methodSymbol, semanticModel.Compilation).FirstOrDefault();
+                    ? methodSymbol
+                    : SymbolFinder.FindSimilarSymbols(methodSymbol, semanticModel.Compilation).FirstOrDefault();
 
                 if (methodSymbolInCurrentCompilation == null
                     || !semanticModel.IsAccessible(position, methodSymbolInCurrentCompilation))
@@ -310,7 +310,7 @@ private static string GetFullyQualifiedNamespaceName(INamespaceSymbol symbol, Di
 
         private static ImmutableArray<IMethodSymbol> GetPotentialMatchingSymbolsFromAssembly(
             IAssemblySymbol assembly,
-            MultiDictionary<string, (string, string)> extensionMethodFilter,
+            MultiDictionary<string, (string methodName, string receiverTypeName)> extensionMethodFilter,
             ISet<string> namespaceFilter,
             bool internalsVisible,
             StatisticCounter counter,
@@ -445,7 +445,7 @@ static bool MatchExtensionMethod(IMethodSymbol method, string filterReceiverType
         }
 
         // Create filter for extension methods from source.
-        private static MultiDictionary<string, (string, string)> CreateAggregatedFilter(ImmutableArray<string> receiverTypeNames, CacheEntry syntaxIndex)
+        private static MultiDictionary<string, (string methodName, string receiverTypeName)> CreateAggregatedFilter(ImmutableArray<string> receiverTypeNames, CacheEntry syntaxIndex)
         {
             var results = new MultiDictionary<string, (string, string)>();
 
@@ -467,7 +467,7 @@ static bool MatchExtensionMethod(IMethodSymbol method, string filterReceiverType
         }
 
         // Create filter for extension methods from metadata
-        private static MultiDictionary<string, (string, string)> CreateAggregatedFilter(ImmutableArray<string> receiverTypeNames, SymbolTreeInfo symbolInfo)
+        private static MultiDictionary<string, (string methodName, string receiverTypeName)> CreateAggregatedFilter(ImmutableArray<string> receiverTypeNames, SymbolTreeInfo symbolInfo)
         {
             var results = new MultiDictionary<string, (string, string)>();
 

src/Workspaces/Core/Portable/FindSymbols/SymbolTree/SymbolTreeInfo.Node.cs

@@ -89,7 +89,6 @@ private string GetDebuggerDisplay()
             /// <summary>
             /// Indicate if the type of parameter is any kind of array (used for both simple and complex types)
             /// </summary>
-
             public readonly bool IsArray;
 
             /// <summary>