Add an extended class hook
Add an extended class hook

appneta/ruby-traceview,appneta/ruby-traceview,appneta/ruby-traceview,appneta/ruby-traceview,boyang-li/oboe-ruby,boyang-li/oboe-ruby,boyang-li/oboe-ruby,tlunter/oboe-ruby,tlunter/oboe-ruby,tlunter/oboe-ruby,tlunter/oboe-ruby,boyang-li/oboe-ruby