Base:
method
GetRefactoringsForSingleParameterAsync
Microsoft.CodeAnalysis.InitializeParameter.AbstractInitializeParameterCodeRefactoringProvider<TTypeDeclarationSyntax, TParameterSyntax, TStatementSyntax, TExpressionSyntax>.GetRefactoringsForSingleParameterAsync(Microsoft.CodeAnalysis.Document, TParameterSyntax, Microsoft.CodeAnalysis.IParameterSymbol, Microsoft.CodeAnalysis.SyntaxNode, Microsoft.CodeAnalysis.IMethodSymbol, Microsoft.CodeAnalysis.Operations.IBlockOperation, System.Threading.CancellationToken)