private Task <IEnumerable <long> > GetCalls(bool filterWithRegex = false)
        {
            IStore s      = Store;
            Regex  r      = null;
            bool   filter = !string.IsNullOrEmpty(FilterText);

            if (filter && filterWithRegex)
            {
                try
                {
                    var str = /*"^" +*/ FilterText.Replace("(", "\\(").Replace(")", "\\)").Replace(".", "\\.").Replace("*", ".*") /*+ "$"*/;
                    r = new Regex(str, RegexOptions.Compiled | RegexOptions.IgnoreCase);
                }
                catch
                {
                }
            }

            if (!filter)
            {
                var ret = Task.Run(() => (IEnumerable <long>)s.IterateCallsWithMethodRuleSet().ToList());
                return(ret);
            }
            else
            {
                if (filterWithRegex)
                {
                    var ret = Task.Run(() => (IEnumerable <long>)s.IterateCallsWithMethodRuleSet().AsParallel().Where(n => r.IsMatch(s.GetCallFullMethodName(n))).ToList());
                    return(ret);
                }
                else
                {
                    var fText = FilterText.Trim().ToUpperInvariant();
                    var ret   = Task.Run(() => (IEnumerable <long>)s.IterateCallsWithMethodRuleSet().AsParallel().Where(n => s.GetCallFullMethodName(n).ToUpperInvariant().Contains(fText)).ToList());
                    return(ret);
                }
            }
        }