# File lib/rgen/metamodel_builder/builder_extensions.rb, line 251
  def _add_metamodel_description(desc) # :nodoc

    @metamodel_description ||= []
    @metamodelDescriptionByName ||= {}
    @metamodel_description.delete(@metamodelDescriptionByName[desc.value(:name)])
    @metamodel_description << desc 
    @metamodelDescriptionByName[desc.value(:name)] = desc
  end