# File lib/hiera/backend/eyaml/utils.rb, line 115
        def self.find_all_subclasses_of args
          parent_class = args[ :parent_class ]
          constants = parent_class.constants
          candidates = []
          constants.each do | candidate |
            candidates << candidate.to_s.split('::').last if parent_class.const_get(candidate).class.to_s == "Class"
          end
          candidates
        end