public List<FilterDefinition> GetFilters()

{
  // Note: call within QueuedTask.Run()
  {
    var filter1 = bsl.CreateDefaultFilter();
    var values = filter1.FilterBlockDefinitions[0].SelectedValues;
    //values will be a single value for the type
    //"CreatedPhase", value "New Construction"

    //There will be at least one filter after "CreateDefaultFilter()" call
    var filtersCount = bsl.GetFilters().Count;
  }
}

{
  // Note: call within QueuedTask.Run()
  {
    //Note: wire_frame_filters can be null in this example
    var wire_frame_filters = bsl.GetFilters().Where(
      f => f.FilterBlockDefinitions.Any(
        fb => fb.FilterBlockMode == Object3DRenderingMode.Wireframe));
    //substitute Object3DRenderingMode.None to get blocks with a solid mode (default)
    //and...
    //fb.FilterBlockMode == Object3DRenderingMode.Wireframe &&
    //fb.FilterBlockMode == Object3DRenderingMode.None
    //for blocks with both
  }
}