public override SyntaxNode VisitForStatement(ForStatementSyntax node)
{
var statement = (BlockSyntax)node.Statement;
var line = GetLineNumber(statement.Statements.Any() ? statement.Statements.First() : statement);
var updated = Block(new[] { ThrowIfCancelled.WithTrailingTrivia(GetLineDirective(line)) }.Concat(statement.Statements));
return(base.VisitForStatement(node.ReplaceNode(statement, updated)));
}
