private static async Task <Document> MakeMultiline( Document document, ParameterListSyntax parameterList, CancellationToken cancellationToken) { var parameters = parameterList.Parameters.ToList(); if (parameters.Count == 0) { return(document); } var tree = await document.GetSyntaxTreeAsync(cancellationToken).ConfigureAwait(false); if (tree == default) { return(document); } var currentIndent = parameterList.EstimateIndent(tree, cancellationToken); var parameterIndent = currentIndent + Settings.IndentOneLevel; return(await RewriteParameterList( document, parameterList, Settings.EndOfLine, Settings.EndOfLine, SF.Whitespace(parameterIndent), cancellationToken)); }