Microsoft.CodeAnalysis.CSharp.Binder.GetCandidateExtensionMethodsInSingleBinder(Microsoft.CodeAnalysis.PooledObjects.ArrayBuilder<Microsoft.CodeAnalysis.CSharp.Symbols.MethodSymbol>, System.String, System.Int32, Microsoft.CodeAnalysis.CSharp.LookupOptions, Microsoft.CodeAnalysis.CSharp.Binder)