private static async Task <IEnumerable <LinePositionSpanTextChange> > FormattingChangesForRange(FormatRangeRequest req)
        {
            var workspace  = TestHelpers.CreateSimpleWorkspace(req.Buffer, req.FileName);
            var controller = new OmnisharpController(workspace, null);

            return((await controller.FormatRange(req)).Changes);
        }
        private static async Task<IEnumerable<LinePositionSpanTextChange>> FormattingChangesForRange(FormatRangeRequest req)
        {
            var workspace = TestHelpers.CreateSimpleWorkspace(req.Buffer, req.FileName);
            var controller = new OmnisharpController(workspace, null);

            return (await controller.FormatRange(req)).Changes;
        }