docs: def available_digests(family=None, name=None):
  		""" Return names of available generators
  
  		:param family: name of hash-generator family to select
  		:param name: name of hash-generator to select
  
  		:return: set of int
  		"""
  		generators = WHash.available_generators(family=family, name=name)
  		return set([WHash.generator(x).generator_digest_size() for x in generators])