private async Task <Document> FixCommentSpacingAsync(Document document, SyntaxToken token, CancellationToken cancellationToken)
{
var newDeclaration = token
.WithLeadingTrivia(TriviaHelper.FixSingleLineCommentSpacing(token.LeadingTrivia))
.WithTrailingTrivia(TriviaHelper.FixSingleLineCommentSpacing(token.TrailingTrivia));
var root = await document.GetSyntaxRootAsync();
var newRoot = root.ReplaceToken(token, newDeclaration);
return(document.WithSyntaxRoot(newRoot));
}