Bloom.NavigationIsolator.ForceDocumentCompleted C# (CSharp) Method

        private void ForceDocumentCompleted()
        {
            Cleanup();
            while (_pending.Count > 0)
            {
                var task = _pending[0];
                _pending.RemoveAt(0);
                // If the file doesn't exist, calling _current.Browser.Navigate() results in the program
                // silently stopping on Linux.  This should never happen with the check made above for
                // superceded navigation requests before posting a pending navigation, but a race could
                // occur between the old file being deleted, the next pending request being handled, and
                // the new file being sent as a navigation requesting.  So we have this check as a backstop.
                // (I always believe in both belts and suspenders, don't you?)  This is part of the fix
                // for https://jira.sil.org/browse/BL-863.
                if (!task.Url.StartsWith("http://") && !RobustFile.Exists(task.Url))
                {
                    Debug.Assert(false, String.Format(@"DEBUG: NavigationIsolator.ForceDocumentCompleted(): new file to display (""{0}"") does not exist!??", task.Url));
                    continue;
                }
                StartTask(task);
                return;
            }
        }