code: def getCountKwargs(func):
      
      # Get all arguments of the function
      if hasattr(func, "__code__"):
          func_args = func.__code__.co_varnames[:func.__code__.co_argcount]
          for pair in validCountKwargs:
              if ( pair[0] in func_args and pair[1] in func_args ):
                  return pair
      # else
      return None
docs: Returns a list ["count kwarg", "count_max kwarg"] for a
      given function. Valid combinations are defined in 
      `progress.validCountKwargs`.
      
      Returns None if no keyword arguments are found.