private string GetTaskVariableName()
{
var variables = _block.GetThisAndParents()
.OfType <BlockSyntax>()
.SelectMany(b => b.Statements)
.OfType <LocalDeclarationStatementSyntax>()
.SelectMany(l => l.Declaration.Variables)
.Select(l => l.Identifier.Text);
var taskIndexes = variables
.Select(v => taskRegex.Match(v))
.WhereNot(v => v == null)
.Select(v => v.Groups[1].Value)
.Select(long.Parse);
var newTaskIndex = taskIndexes
.OrderByDescending(i => i)
.Select(i => i + 1)
.FirstOrDefault();
return($"task{newTaskIndex}");
}
