docs: def find_classes_in_module(module, clstypes):
      """Find classes of clstypes in module
      """
      classes = []
      for item in dir(module):
          item = getattr(module, item)
          try:
              for cls in clstypes:
                  if issubclass(item, cls) and item != cls:
                      classes.append(item)
          except Exception as e:
              pass
      return classes