public static bool ContainsOnlyWhitespaceOrEndOfLineTrivia(SyntaxNode node, TextSpan?span = null)
{
ContainsOnlyWhitespaceOrEndOfLineTriviaWalker walker = ContainsOnlyWhitespaceOrEndOfLineTriviaWalker.GetInstance(span ?? node.FullSpan);
walker.Visit(node);
bool result = walker.Result;
ContainsOnlyWhitespaceOrEndOfLineTriviaWalker.Free(walker);
return(result);
}