# rm::data_structures
# class DATA_STRUCTURE
# http://www.openehr.org/uml/release-1.0.1/Browsable/_9_5_1_76d0249_1140447518205_872539_864Report.html
# refs #59
module Data_Structures
  class Data_Structure 
    def as_hierarchy
      raise NotImplementError, "as_hirarchy must be implemented"
    end
  end
end