code: def to_local(acs, statement, allow_unknown_attributes=False):
      
      return list_to_local(acs, statement.attribute, allow_unknown_attributes)
docs: Replaces the attribute names in a attribute value assertion with the
      equivalent name from a local name format.
  
      :param acs: List of Attribute Converters
      :param statement: The Attribute Statement
      :param allow_unknown_attributes: If unknown attributes are allowed
      :return: A key,values dictionary