public static async Task <Document> RefactorAsync( Document document, BinaryExpressionSyntax binaryExpression, bool multiline = false, CancellationToken cancellationToken = default(CancellationToken)) { SyntaxNode root = await document.GetSyntaxRootAsync(cancellationToken).ConfigureAwait(false); var chain = new StringLiteralChain(binaryExpression); LiteralExpressionSyntax newNode = (multiline) ? chain.MergeMultiline() : chain.Merge(); root = root.ReplaceNode( binaryExpression, newNode.WithFormatterAnnotation()); return(document.WithSyntaxRoot(root)); }