# File lib/facter/util/plist/parser.rb, line 116
116:     def PTag::inherited( sub_class )
117:       key = sub_class.to_s.downcase
118:       key.gsub!(/^plist::/, '' )
119:       key.gsub!(/^p/, '')  unless key == "plist"
120: 
121:       @@mappings[key] = sub_class
122:     end