time: document that time.Tick creates an unrecoverable resource
time: document that time.Tick creates an unrecoverable resource

Fixes #11662.

Change-Id: I8839b48a1cd3da4c29b6def03cb0c74c1c12942e
Reviewed-on: https://go-review.googlesource.com/12066
Reviewed-by: Brad Fitzpatrick <ae9783c0b0efc69cd85ab025ddd17aa44cdc4aa5@golang.org>

mwhudson/go,dterei/go,jdhenke/go,kevinc0825/go,roth1002/go,uileyar/go,rentongzhang/go,yangzhongj/go,springning/go,cnbin/go,nakedgc/go,yeyuguo/go,jmptrader/go,dafyddcrosby/go,Young55555/go,zouchao2010/go,b54898533/go,parkdy/go,josharian/go,XuYunnan/go,donnel6809/go,JioCloud/go,ErikDubbelboer/go,magastzheng/go-1,jameskumar/go,zcwfeng/go,honsiorovskyi/go,xujianhai/go,jonahglover/go,goodlang/good,magastzheng/go-1,NunoEdgarGub1/go,alash3al/go,g522342435/go,andrewchambers/go,constantine001/go,baiyunping333/go,XuYunnan/go,b54898533/go,Cofyc/go,jdeng/go,kakuhiroshi/go,Pulgafree/go,josharian/go,famorted/go,skatsuta/go,jacobsa/go,mgyenik/go,cookerzhu/go,dgnorton/go,shines77/go,nawawi/go,b-deng/go,jonasi/go,vanloswang/go,yeyuguo/go,myPublicGit/go,momchil-velikov/go,Jordanzuo/go,CAFxX/go,vishsingh/go,josharian/go,Young55555/go,snowsnail/go,jmptrader/go,constantine001/go,alex-zhang/go,xiaobodu/go,jacobxk/go,shines77/go,gohin/go,xujianhai/go,baiyunping333/go,deft-code/go,Jordanzuo/go,stormltf/go,CodyGuo/go,kakuhiroshi/go,PoohSunny/go,4ad/go,shazow/go,polyverse-security/go,sndnvaps/go,golang/go,mdp/go,cyberroadie/go,kim-racktop/go,kakuhiroshi/go,shazow/go,JioCloud/go,ErikDubbelboer/go,suncycheng/go,honsiorovskyi/go,arschles/go-1,jdhenke/go,sosop/go,zcwfeng/go,andrewchambers/go,wangfakang/go-1,xujianhai/go,mbrukman/go,NunoEdgarGub1/go,albertjin/golang-go,yasarkunduz/go,CiscoCloud/go,dkolbly/go,ObjectiveJoe/go,shishkander/go,akutz/go,jdeng/go,NunoEdgarGub1/go,kevinc0825/go,CiscoCloud/go,GeorgiCodes/go,monetate/go,ifagnosticism/go,parkdy/go,jonathanmarvens/go,mdp/go,springning/go,miolini/go,AALEKH/go,malvira/go,mwhudson/go,royels/go,wangfakang/go-1,Pulgafree/go,cnbin/go,devpadawan/go,ImJasonH/go,goodlang/good,samanalysis/go,CiscoCloud/go,codestation/go,samanalysis/go,deft-code/go,kim-racktop/go,springning/go,jonahglover/go,chinanjjohn2012/go,NunoEdgarGub1/go,vsekhar/elastic-go,lihuanghai/go,vsdutka/go,kakuhiroshi/go,PoohSunny/go,cyberroadie/go,arschles/go-1,ericsnowcurrently/go,momchil-velikov/go,uileyar/go,JioCloud/go,xujianhai/go,jonasi/go,andrewchambers/go,mbrukman/go,goodlang/good,cloudrain21/go,jameskumar/go,Samurais/go,gohin/go,ImJasonH/go,polyverse-security/go,Stan-Lin-/go,danielsoro/go,zhangg/go,CodyGuo/go,mwhudson/go,yangzhongj/go,ganboing/go-esx,miolini/go,arschles/go-1,xiaobodu/go,donnel6809/go,shazow/go,youprofit/go,CodyGuo/go,lihuanghai/go,9618211/go,linux-on-ibm-z/go,odeke-em/go,joshsammut/go,dpatel06/go,likesea/go,Badredapple/go,NichoZhang/go,binarycrusader/go,beealone/go,dpatel06/go,cookerzhu/go,nakedgc/go,RBEGamer/go,josharian/go,cainiaocome/go,dafyddcrosby/go,NichoZhang/go,ifagnosticism/go,yasarkunduz/go,CiscoCloud/go,jacobhaven/go,kevinc0825/go,dkolbly/go,ifagnosticism/go,fjballest/golang,dgnorton/go,skotti/go,PoohSunny/go,xujianhai/go,AALEKH/go,Stan-Lin-/go,weisd/go,kevinc0825/go,jasonxiong/go,ObjectiveJoe/go,gdey/go,slavau/go,sinuos/go,likesea/go,cookerzhu/go,ImJasonH/go,Samurais/go,Cofyc/go,sndnvaps/go,willjunspecial/go,shazow/go,baiyunping333/go,albertjin/golang-go,likesea/go,kakuhiroshi/go,springning/go,skotti/go,cloudrain21/go,jacobxk/go,ericsnowcurrently/go,rachtsingh/gogojuice,cloudflare/go,xinhuang327/go,Cofyc/go,chinanjjohn2012/go,CarterTsai/go,zhangg/go,cookerzhu/go,danielsoro/go,ichu501/go,leeric92/go,christopher-henderson/Go,ObjectiveJoe/go,Charlesdong/go-1,Cofyc/go,mwhudson/go,snowsnail/go,Young55555/go,vanloswang/go,cloudflare/go,stormltf/go,ganboing/go-esx,fjballest/golang,shishkander/go,jdhenke/go,honsiorovskyi/go,qskycolor/go,jameskumar/go,JioCloud/go,constantine001/go,WIZARD-CXY/go,rentongzhang/go,baiyunping333/go,youprofit/go,jonasi/go,codestation/go,NichoZhang/go,codestation/go,theif519/go,mikekap/go,theass/go,dafyddcrosby/go,xiuzhifu/go,vishsingh/go,xiaobodu/go,gdey/go,akutz/go,springning/go,zcwfeng/go,alash3al/go,arschles/golang-go,youprofit/go,kim-racktop/go,zouchao2010/go,dgnorton/go,NichoZhang/go,Stan-Lin-/go,CiscoCloud/go,rachtsingh/gogojuice,springning/go,9618211/go,honsiorovskyi/go,slavau/go,theif519/go,CodyGuo/go,binarycrusader/go,vishsingh/go,uileyar/go,mikekap/go,jonasi/go,devpadawan/go,jonasi/go,PoohSunny/go,monetate/go,springning/go,jasonxiong/go,famorted/go,g522342435/go,miolini/go,royels/go,dterei/go,yuhengye/go,jonahglover/go,Young55555/go,codestation/go,royels/go,zhangg/go,parkdy/go,4ad/go,albertjin/golang-go,yangzhongj/go,pgmreddy/go,ericsnowcurrently/go,pgmreddy/go,AALEKH/go,likesea/go,alash3al/go,devpadawan/go,NichoZhang/go,rachtsingh/gogojuice,xiuzhifu/go,g522342435/go,Jordanzuo/go,leeric92/go,9618211/go,momchil-velikov/go,Young55555/go,binarycrusader/go,parkdy/go,dterei/go,Endika/go,RBEGamer/go,CodyGuo/go,fjballest/golang,Stan-Lin-/go,donnel6809/go,4ad/go,danycoro/go,skotti/go,mbrukman/go,cookerzhu/go,skotti/go,joshsammut/go,sinuos/go,jameskumar/go,mgyenik/go,skatsuta/go,mbrukman/go,vishsingh/go,zhangg/go,gohin/go,springning/go,ObjectiveJoe/go,skotti/go,lihuanghai/go,theass/go,jefby/go,undergrowthlinear/go,Young55555/go,sosop/go,shishkander/go,vishsingh/go,rentongzhang/go,shazow/go,youprofit/go,Jordanzuo/go,RBEGamer/go,AALEKH/go,jmptrader/go,chinanjjohn2012/go,Badredapple/go,samanalysis/go,mwhudson/go,b54898533/go,qskycolor/go,kim-racktop/go,ericsnowcurrently/go,shines77/go,theif519/go,xinhuang327/go,jameskumar/go,vsdutka/go,gohin/go,undergrowthlinear/go,xiaobodu/go,ErikDubbelboer/go,jdeng/go,undergrowthlinear/go,alex-zhang/go,NichoZhang/go,mdp/go,skatsuta/go,zcwfeng/go,arschles/golang-go,willjunspecial/go,ichu501/go,zhangg/go,nakedgc/go,miolini/go,Charlesdong/go-1,cloudrain21/go,danycoro/go,youprofit/go,skatsuta/go,Pulgafree/go,Pulgafree/go,Stan-Lin-/go,xiuzhifu/go,jdhenke/go,vsdutka/go,danycoro/go,vsekhar/elastic-go,snowsnail/go,alex-zhang/go,RBEGamer/go,parkdy/go,AALEKH/go,jmptrader/go,roth1002/go,rachtsingh/gogojuice,cloudrain21/go,arschles/golang-go,jdhenke/go,4ad/go,agaurav/go,jacobhaven/go,gdey/go,donnel6809/go,magastzheng/go-1,albertjin/golang-go,mgyenik/go,andrewchambers/go,XuYunnan/go,shazow/go,golang/go,famorted/go,andrewchambers/go,yuhengye/go,momchil-velikov/go,linux-on-ibm-z/go,jasonxiong/go,shines77/go,ichu501/go,Badredapple/go,yuhengye/go,mikekap/go,greyhwndz/go,ifagnosticism/go,undergrowthlinear/go,Cofyc/go,jefby/go,binarycrusader/go,danielsoro/go,joshsammut/go,malvira/go,greyhwndz/go,golang/go,snowsnail/go,snowsnail/go,polyverse-security/go,jonathanmarvens/go,Endika/go,roth1002/go,malvira/go,monetate/go,jefby/go,mikekap/go,samanalysis/go,GeorgiCodes/go,beealone/go,myPublicGit/go,shishkander/go,kim-racktop/go,vsdutka/go,albertjin/golang-go,likesea/go,goodlang/good,yasarkunduz/go,sinuos/go,suncycheng/go,theif519/go,JioCloud/go,jdeng/go,deft-code/go,suncycheng/go,beealone/go,zcwfeng/go,Stan-Lin-/go,devpadawan/go,momchil-velikov/go,rentongzhang/go,rentongzhang/go,donnel6809/go,dpatel06/go,constantine001/go,akutz/go,sinuos/go,Charlesdong/go-1,derekmarcotte/go,mgyenik/go,momchil-velikov/go,cnbin/go,yangzhongj/go,suncycheng/go,dkolbly/go,royels/go,cyberroadie/go,zouchao2010/go,dgnorton/go,Stan-Lin-/go,vsekhar/elastic-go,jefby/go,andrewchambers/go,b-deng/go,albertjin/golang-go,agaurav/go,polyverse-security/go,jasonxiong/go,samanalysis/go,deft-code/go,myPublicGit/go,fjballest/golang,baiyunping333/go,jacobhaven/go,yangzhongj/go,vanloswang/go,willjunspecial/go,pgmreddy/go,willjunspecial/go,ErikDubbelboer/go,dafyddcrosby/go,WIZARD-CXY/go,NunoEdgarGub1/go,momchil-velikov/go,Charlesdong/go-1,4ad/go,yuhengye/go,9618211/go,sosop/go,vanloswang/go,ganboing/go-esx,roth1002/go,goodlang/good,jacobxk/go,jacobxk/go,rachtsingh/gogojuice,XuYunnan/go,royels/go,Pulgafree/go,wangfakang/go-1,b54898533/go,suncycheng/go,malvira/go,JioCloud/go,wangfakang/go-1,derekmarcotte/go,jefby/go,cnbin/go,cloudflare/go,vsekhar/elastic-go,nakedgc/go,constantine001/go,danycoro/go,dkolbly/go,cainiaocome/go,b-deng/go,goodlang/good,magastzheng/go-1,dgnorton/go,cloudflare/go,uileyar/go,youprofit/go,ObjectiveJoe/go,beealone/go,jacobhaven/go,binarycrusader/go,mgyenik/go,danielsoro/go,ErikDubbelboer/go,suncycheng/go,skatsuta/go,akutz/go,Cofyc/go,codestation/go,jonathanmarvens/go,ifagnosticism/go,malvira/go,cloudrain21/go,greyhwndz/go,greyhwndz/go,CarterTsai/go,theif519/go,ifagnosticism/go,skotti/go,Samurais/go,willjunspecial/go,wangfakang/go-1,Endika/go,dpatel06/go,cloudflare/go,dterei/go,b-deng/go,odeke-em/go,arschles/go-1,CiscoCloud/go,jonathanmarvens/go,pgmreddy/go,myPublicGit/go,jacobsa/go,sndnvaps/go,ichu501/go,devpadawan/go,JioCloud/go,RBEGamer/go,sosop/go,constantine001/go,goodlang/good,xiuzhifu/go,xinhuang327/go,dkolbly/go,sndnvaps/go,theass/go,xinhuang327/go,GeorgiCodes/go,kim-racktop/go,constantine001/go,mbrukman/go,jdhenke/go,Samurais/go,arschles/golang-go,yasarkunduz/go,gdey/go,mbrukman/go,fjballest/golang,shazow/go,kim-racktop/go,malvira/go,yasarkunduz/go,mbrukman/go,mdp/go,uileyar/go,alex-zhang/go,mbrukman/go,odeke-em/go,lihuanghai/go,Charlesdong/go-1,WIZARD-CXY/go,ifagnosticism/go,theass/go,jacobsa/go,zouchao2010/go,magastzheng/go-1,jameskumar/go,XuYunnan/go,slavau/go,NichoZhang/go,derekmarcotte/go,pgmreddy/go,GeorgiCodes/go,agaurav/go,cookerzhu/go,jacobsa/go,mgyenik/go,Jordanzuo/go,cainiaocome/go,jdhenke/go,cyberroadie/go,golang/go,albertjin/golang-go,dterei/go,CAFxX/go,ericsnowcurrently/go,chinanjjohn2012/go,deft-code/go,jonathanmarvens/go,akutz/go,chinanjjohn2012/go,shishkander/go,willjunspecial/go,andrewchambers/go,kevinc0825/go,shishkander/go,Badredapple/go,weisd/go,skotti/go,mgyenik/go,dterei/go,ericsnowcurrently/go,odeke-em/go,mikekap/go,Jordanzuo/go,nakedgc/go,xinhuang327/go,devpadawan/go,xiaobodu/go,CAFxX/go,b54898533/go,beealone/go,odeke-em/go,weisd/go,famorted/go,zhangg/go,XuYunnan/go,cnbin/go,mwhudson/go,Young55555/go,stormltf/go,rentongzhang/go,jasonxiong/go,Pulgafree/go,dpatel06/go,albertjin/golang-go,odeke-em/go,RBEGamer/go,agaurav/go,kakuhiroshi/go,nawawi/go,ganboing/go-esx,GeorgiCodes/go,jonathanmarvens/go,slavau/go,gohin/go,dterei/go,kevinc0825/go,jonasi/go,snowsnail/go,arschles/golang-go,odeke-em/go,undergrowthlinear/go,ImJasonH/go,agaurav/go,Badredapple/go,leeric92/go,slavau/go,parkdy/go,danycoro/go,polyverse-security/go,yuhengye/go,linux-on-ibm-z/go,WIZARD-CXY/go,joshsammut/go,xinhuang327/go,skotti/go,kakuhiroshi/go,g522342435/go,cnbin/go,royels/go,shishkander/go,suncycheng/go,NunoEdgarGub1/go,ImJasonH/go,mikekap/go,nakedgc/go,Badredapple/go,AALEKH/go,beealone/go,qskycolor/go,roth1002/go,parkdy/go,arschles/golang-go,derekmarcotte/go,likesea/go,magastzheng/go-1,kevinc0825/go,kim-racktop/go,momchil-velikov/go,sosop/go,RBEGamer/go,undergrowthlinear/go,xinhuang327/go,dgnorton/go,suncycheng/go,slavau/go,xiuzhifu/go,constantine001/go,g522342435/go,donnel6809/go,deft-code/go,mdp/go,linux-on-ibm-z/go,gohin/go,lihuanghai/go,jonahglover/go,Jordanzuo/go,yuhengye/go,fjballest/golang,akutz/go,greyhwndz/go,yangzhongj/go,willjunspecial/go,honsiorovskyi/go,donnel6809/go,theif519/go,jasonxiong/go,NunoEdgarGub1/go,mdp/go,royels/go,CarterTsai/go,NichoZhang/go,gdey/go,dkolbly/go,snowsnail/go,cainiaocome/go,JioCloud/go,nakedgc/go,cloudflare/go,kakuhiroshi/go,Badredapple/go,chinanjjohn2012/go,ImJasonH/go,derekmarcotte/go,myPublicGit/go,leeric92/go,monetate/go,skatsuta/go,josharian/go,vanloswang/go,vanloswang/go,ErikDubbelboer/go,royels/go,vsekhar/elastic-go,leeric92/go,odeke-em/go,weisd/go,derekmarcotte/go,Charlesdong/go-1,monetate/go,josharian/go,g522342435/go,Charlesdong/go-1,ObjectiveJoe/go,zouchao2010/go,dafyddcrosby/go,xiuzhifu/go,jacobsa/go,mdp/go,miolini/go,josharian/go,gohin/go,danielsoro/go,zcwfeng/go,b-deng/go,xiaobodu/go,samanalysis/go,yeyuguo/go,myPublicGit/go,vanloswang/go,sndnvaps/go,alash3al/go,alash3al/go,joshsammut/go,CAFxX/go,likesea/go,Stan-Lin-/go,4ad/go,jacobxk/go,RBEGamer/go,magastzheng/go-1,cainiaocome/go,g522342435/go,samanalysis/go,ichu501/go,zhangg/go,jonahglover/go,ichu501/go,leeric92/go,qskycolor/go,undergrowthlinear/go,famorted/go,danycoro/go,goodlang/good,jdhenke/go,vanloswang/go,linux-on-ibm-z/go,uileyar/go,jacobhaven/go,dgnorton/go,parkdy/go,Samurais/go,WIZARD-CXY/go,polyverse-security/go,cyberroadie/go,leeric92/go,uileyar/go,baiyunping333/go,vsdutka/go,jmptrader/go,uileyar/go,ImJasonH/go,Endika/go,arschles/go-1,Endika/go,9618211/go,alex-zhang/go,jefby/go,jefby/go,ganboing/go-esx,jacobsa/go,xujianhai/go,jonathanmarvens/go,wangfakang/go-1,willjunspecial/go,zouchao2010/go,greyhwndz/go,ObjectiveJoe/go,golang/go,jonathanmarvens/go,jonasi/go,qskycolor/go,skatsuta/go,theif519/go,roth1002/go,binarycrusader/go,Young55555/go,youprofit/go,4ad/go,jdeng/go,ericsnowcurrently/go,shishkander/go,mdp/go,monetate/go,beealone/go,theass/go,jmptrader/go,chinanjjohn2012/go,cookerzhu/go,deft-code/go,akutz/go,malvira/go,xiuzhifu/go,linux-on-ibm-z/go,WIZARD-CXY/go,joshsammut/go,deft-code/go,miolini/go,agaurav/go,theass/go,sinuos/go,famorted/go,zouchao2010/go,vsekhar/elastic-go,jonahglover/go,b54898533/go,yasarkunduz/go,jasonxiong/go,lihuanghai/go,alash3al/go,xiuzhifu/go,ErikDubbelboer/go,jdeng/go,CarterTsai/go,slavau/go,Charlesdong/go-1,vsdutka/go,nawawi/go,sndnvaps/go,youprofit/go,Cofyc/go,dafyddcrosby/go,ObjectiveJoe/go,cloudrain21/go,zcwfeng/go,jacobhaven/go,Samurais/go,arschles/golang-go,rachtsingh/gogojuice,jameskumar/go,snowsnail/go,CarterTsai/go,golang/go,qskycolor/go,codestation/go,fjballest/golang,GeorgiCodes/go,ifagnosticism/go,roth1002/go,greyhwndz/go,Samurais/go,qskycolor/go,xujianhai/go,sinuos/go,vsekhar/elastic-go,linux-on-ibm-z/go,jacobsa/go,Pulgafree/go,ImJasonH/go,9618211/go,PoohSunny/go,Endika/go,undergrowthlinear/go,joshsammut/go,CodyGuo/go,sinuos/go,cloudflare/go,agaurav/go,CarterTsai/go,arschles/go-1,andrewchambers/go,WIZARD-CXY/go,jacobxk/go,sinuos/go,yeyuguo/go,golang/go,akutz/go,polyverse-security/go,vsdutka/go,xujianhai/go,magastzheng/go-1,nawawi/go,CodyGuo/go,CAFxX/go,miolini/go,stormltf/go,zhangg/go,cainiaocome/go,xiaobodu/go,honsiorovskyi/go,CiscoCloud/go,danycoro/go,cyberroadie/go,yeyuguo/go,baiyunping333/go,ganboing/go-esx,golang/go,CarterTsai/go,yuhengye/go,shines77/go,shazow/go,greyhwndz/go,b54898533/go,ichu501/go,gdey/go,binarycrusader/go,PoohSunny/go,rentongzhang/go,leeric92/go,lihuanghai/go,cainiaocome/go,linux-on-ibm-z/go,CodyGuo/go,sndnvaps/go,Jordanzuo/go,CAFxX/go,XuYunnan/go,jameskumar/go,jasonxiong/go,ichu501/go,9618211/go,ganboing/go-esx,myPublicGit/go,weisd/go,binarycrusader/go,GeorgiCodes/go,theif519/go,GeorgiCodes/go,Samurais/go,alash3al/go,dpatel06/go,rachtsingh/gogojuice,b-deng/go,dkolbly/go,AALEKH/go,rentongzhang/go,Endika/go,jonasi/go,weisd/go,XuYunnan/go,AALEKH/go,nakedgc/go,mwhudson/go,mgyenik/go,dpatel06/go,cyberroadie/go,CarterTsai/go,cainiaocome/go,dterei/go,dpatel06/go,yeyuguo/go,zcwfeng/go,mikekap/go,weisd/go,4ad/go,xinhuang327/go,shines77/go,PoohSunny/go,nawawi/go,josharian/go,g522342435/go,famorted/go,yangzhongj/go,Cofyc/go,honsiorovskyi/go,mwhudson/go,stormltf/go,stormltf/go,devpadawan/go,miolini/go,b-deng/go,derekmarcotte/go,likesea/go,joshsammut/go,CAFxX/go,jonahglover/go,arschles/go-1,jdeng/go,CiscoCloud/go,monetate/go,donnel6809/go,codestation/go,jdeng/go,sosop/go,yasarkunduz/go,zouchao2010/go,baiyunping333/go,vishsingh/go,stormltf/go,samanalysis/go,arschles/go-1,xiaobodu/go,cnbin/go,jonahglover/go,wangfakang/go-1,pgmreddy/go,malvira/go,ganboing/go-esx,wangfakang/go-1,yeyuguo/go,arschles/golang-go,dafyddcrosby/go,vsekhar/elastic-go,alash3al/go,pgmreddy/go,vishsingh/go,danycoro/go,jacobhaven/go,sosop/go,cnbin/go,nawawi/go,jmptrader/go,cloudrain21/go,codestation/go,jacobsa/go,beealone/go,jmptrader/go,NunoEdgarGub1/go,kevinc0825/go,myPublicGit/go,yangzhongj/go,stormltf/go,danielsoro/go,mikekap/go,Badredapple/go,CAFxX/go,PoohSunny/go,gdey/go,jefby/go,alex-zhang/go,sosop/go,theass/go,dgnorton/go,nawawi/go,ericsnowcurrently/go,qskycolor/go,dafyddcrosby/go,roth1002/go,cookerzhu/go,alex-zhang/go,dkolbly/go,skatsuta/go,vsdutka/go,jacobxk/go,nawawi/go,agaurav/go,danielsoro/go,chinanjjohn2012/go,9618211/go,yeyuguo/go,honsiorovskyi/go,shines77/go,pgmreddy/go,weisd/go,polyverse-security/go,cloudflare/go,gohin/go,yuhengye/go,alex-zhang/go,WIZARD-CXY/go,jacobhaven/go,lihuanghai/go,slavau/go,danielsoro/go,Pulgafree/go,monetate/go,derekmarcotte/go,famorted/go,cloudrain21/go,Endika/go,theass/go,gdey/go,fjballest/golang,ErikDubbelboer/go,shines77/go,sndnvaps/go,devpadawan/go,yasarkunduz/go,b-deng/go,jacobxk/go,b54898533/go,rachtsingh/gogojuice,cyberroadie/go,vishsingh/go