add legacy example to verify the legacy shim works
add legacy example to verify the legacy shim works

i/tchannel,hustxiaoc/tchannel,RyanTech/tchannel,benfleis/tchannel,benfleis/tchannel,bunnyblue/tchannel,chenwenbin928/tchannel,chenwenbin928/tchannel,bunnyblue/tchannel,savaki/tchannel,vanloswang/tchannel,RyanTech/tchannel,Zirpon/tchannel,hustxiaoc/tchannel,i/tchannel,savaki/tchannel,vanloswang/tchannel,chenwenbin928/tchannel,sasa233/tchannel,Zirpon/tchannel,hustxiaoc/tchannel,sasa233/tchannel,savaki/tchannel,RyanTech/tchannel,sasa233/tchannel,bunnyblue/tchannel,benfleis/tchannel,i/tchannel,Zirpon/tchannel,vanloswang/tchannel