Clarify caller contract for grpc_call_start_batch
Clarify caller contract for grpc_call_start_batch

stanley-cheung/grpc,kskalski/grpc,pszemus/grpc,firebase/grpc,LuminateWireless/grpc,grpc/grpc,andrewpollock/grpc,Vizerai/grpc,carl-mastrangelo/grpc,zhimingxie/grpc,dklempner/grpc,tamihiro/grpc,soltanmm-google/grpc,adelez/grpc,a11r/grpc,firebase/grpc,MakMukhi/grpc,apolcyn/grpc,Crevil/grpc,Vizerai/grpc,baylabs/grpc,nicolasnoble/grpc,jcanizales/grpc,ncteisen/grpc,maxwell-demon/grpc,Vizerai/grpc,leifurhauks/grpc,y-zeng/grpc,JoeWoo/grpc,vjpai/grpc,greasypizza/grpc,greasypizza/grpc,dgquintas/grpc,doubi-workshop/grpc,sidrakesh93/grpc,ctiller/grpc,tengyifei/grpc,bogdandrutu/grpc,JoeWoo/grpc,surround-io/grpc,fuchsia-mirror/third_party-grpc,royalharsh/grpc,cgvarela/grpc,kumaralokgithub/grpc,vsco/grpc,maxwell-demon/grpc,infinit/grpc,carl-mastrangelo/grpc,yinsu/grpc,thinkerou/grpc,fuchsia-mirror/third_party-grpc,ananthonline/grpc,chrisdunelm/grpc,wcevans/grpc,makdharma/grpc,mehrdada/grpc,arkmaxim/grpc,yugui/grpc,nicolasnoble/grpc,grani/grpc,cgvarela/grpc,soltanmm-google/grpc,ctiller/grpc,dklempner/grpc,carl-mastrangelo/grpc,xtopsoft/grpc,murgatroid99/grpc,adelez/grpc,kriswuollett/grpc,msmania/grpc,vsco/grpc,tempbottle/grpc,a11r/grpc,goldenbull/grpc,murgatroid99/grpc,royalharsh/grpc,stanley-cheung/grpc,7anner/grpc,ctiller/grpc,ananthonline/grpc,daniel-j-born/grpc,y-zeng/grpc,murgatroid99/grpc,chrisdunelm/grpc,PeterFaiman/ruby-grpc-minimal,vjpai/grpc,msiedlarek/grpc,dklempner/grpc,madongfly/grpc,daniel-j-born/grpc,royalharsh/grpc,y-zeng/grpc,PeterFaiman/ruby-grpc-minimal,ejona86/grpc,donnadionne/grpc,muxi/grpc,PeterFaiman/ruby-grpc-minimal,arkmaxim/grpc,firebase/grpc,7anner/grpc,gpndata/grpc,hstefan/grpc,xtopsoft/grpc,muxi/grpc,a-veitch/grpc,infinit/grpc,sreecha/grpc,philcleveland/grpc,ppietrasa/grpc,leifurhauks/grpc,ofrobots/grpc,fuchsia-mirror/third_party-grpc,cgvarela/grpc,VcamX/grpc,simonkuang/grpc,chrisdunelm/grpc,wangyikai/grpc,sreecha/grpc,PeterFaiman/ruby-grpc-minimal,miselin/grpc,jtattermusch/grpc,malexzx/grpc,yugui/grpc,soltanmm-google/grpc,hstefan/grpc,ejona86/grpc,ncteisen/grpc,infinit/grpc,grani/grpc,ppietrasa/grpc,kskalski/grpc,podsvirov/grpc,doubi-workshop/grpc,ppietrasa/grpc,miselin/grpc,arkmaxim/grpc,yang-g/grpc,tempbottle/grpc,sidrakesh93/grpc,deepaklukose/grpc,bjori/grpc,gpndata/grpc,ofrobots/grpc,donnadionne/grpc,grpc/grpc,y-zeng/grpc,sreecha/grpc,sreecha/grpc,bogdandrutu/grpc,kumaralokgithub/grpc,makdharma/grpc,Crevil/grpc,crast/grpc,jtattermusch/grpc,7anner/grpc,leifurhauks/grpc,ofrobots/grpc,jcanizales/grpc,perumaalgoog/grpc,tempbottle/grpc,dklempner/grpc,cgvarela/grpc,bogdandrutu/grpc,gpndata/grpc,royalharsh/grpc,yugui/grpc,kpayson64/grpc,yinsu/grpc,stanley-cheung/grpc,muxi/grpc,surround-io/grpc,bjori/grpc,zhimingxie/grpc,quizlet/grpc,pmarks-net/grpc,kriswuollett/grpc,jtattermusch/grpc,apolcyn/grpc,PeterFaiman/ruby-grpc-minimal,mehrdada/grpc,thunderboltsid/grpc,daniel-j-born/grpc,infinit/grpc,Crevil/grpc,vjpai/grpc,kpayson64/grpc,LuminateWireless/grpc,fichter/grpc,MakMukhi/grpc,tengyifei/grpc,arkmaxim/grpc,geffzhang/grpc,a-veitch/grpc,kpayson64/grpc,wcevans/grpc,simonkuang/grpc,sreecha/grpc,deepaklukose/grpc,dgquintas/grpc,maxwell-demon/grpc,Crevil/grpc,a11r/grpc,crast/grpc,a11r/grpc,meisterpeeps/grpc,adelez/grpc,msmania/grpc,pmarks-net/grpc,simonkuang/grpc,miselin/grpc,meisterpeeps/grpc,pszemus/grpc,vsco/grpc,surround-io/grpc,jboeuf/grpc,greasypizza/grpc,geffzhang/grpc,geffzhang/grpc,tengyifei/grpc,sreecha/grpc,malexzx/grpc,ppietrasa/grpc,andrewpollock/grpc,thinkerou/grpc,donnadionne/grpc,stanley-cheung/grpc,murgatroid99/grpc,w4-sjcho/grpc,deepaklukose/grpc,baylabs/grpc,perumaalgoog/grpc,doubi-workshop/grpc,goldenbull/grpc,jboeuf/grpc,philcleveland/grpc,fichter/grpc,apolcyn/grpc,donnadionne/grpc,jtattermusch/grpc,kskalski/grpc,grpc/grpc,yinsu/grpc,mehrdada/grpc,ipylypiv/grpc,thinkerou/grpc,vsco/grpc,wangyikai/grpc,JoeWoo/grpc,jboeuf/grpc,murgatroid99/grpc,ksophocleous/grpc,miselin/grpc,maxwell-demon/grpc,7anner/grpc,podsvirov/grpc,donnadionne/grpc,hstefan/grpc,donnadionne/grpc,dgquintas/grpc,matt-kwong/grpc,geffzhang/grpc,murgatroid99/grpc,pszemus/grpc,fichter/grpc,thunderboltsid/grpc,doubi-workshop/grpc,w4-sjcho/grpc,ncteisen/grpc,greasypizza/grpc,pszemus/grpc,7anner/grpc,jboeuf/grpc,gpndata/grpc,jcanizales/grpc,crast/grpc,adelez/grpc,geffzhang/grpc,yongni/grpc,ppietrasa/grpc,ctiller/grpc,leifurhauks/grpc,royalharsh/grpc,quizlet/grpc,adelez/grpc,kskalski/grpc,MakMukhi/grpc,yang-g/grpc,fichter/grpc,matt-kwong/grpc,vjpai/grpc,geffzhang/grpc,donnadionne/grpc,pszemus/grpc,doubi-workshop/grpc,ipylypiv/grpc,deepaklukose/grpc,thunderboltsid/grpc,malexzx/grpc,podsvirov/grpc,ipylypiv/grpc,rjshade/grpc,ppietrasa/grpc,wangyikai/grpc,msmania/grpc,dgquintas/grpc,ejona86/grpc,ctiller/grpc,rjshade/grpc,jcanizales/grpc,arkmaxim/grpc,grani/grpc,MakMukhi/grpc,quizlet/grpc,ananthonline/grpc,wangyikai/grpc,tamihiro/grpc,kpayson64/grpc,matt-kwong/grpc,arkmaxim/grpc,dklempner/grpc,matt-kwong/grpc,pmarks-net/grpc,PeterFaiman/ruby-grpc-minimal,goldenbull/grpc,mehrdada/grpc,JoeWoo/grpc,grani/grpc,nicolasnoble/grpc,kumaralokgithub/grpc,yongni/grpc,PeterFaiman/ruby-grpc-minimal,chrisdunelm/grpc,yongni/grpc,crast/grpc,ananthonline/grpc,ofrobots/grpc,jcanizales/grpc,msmania/grpc,stanley-cheung/grpc,sidrakesh93/grpc,grpc/grpc,ejona86/grpc,pmarks-net/grpc,yinsu/grpc,rjshade/grpc,muxi/grpc,crast/grpc,vjpai/grpc,miselin/grpc,ksophocleous/grpc,nicolasnoble/grpc,greasypizza/grpc,w4-sjcho/grpc,deepaklukose/grpc,donnadionne/grpc,philcleveland/grpc,larsonmpdx/grpc,sidrakesh93/grpc,VcamX/grpc,Crevil/grpc,makdharma/grpc,malexzx/grpc,andrewpollock/grpc,zhimingxie/grpc,philcleveland/grpc,mehrdada/grpc,a-veitch/grpc,jtattermusch/grpc,VcamX/grpc,cgvarela/grpc,pmarks-net/grpc,daniel-j-born/grpc,stanley-cheung/grpc,royalharsh/grpc,doubi-workshop/grpc,Crevil/grpc,yugui/grpc,MakMukhi/grpc,JoeWoo/grpc,baylabs/grpc,kriswuollett/grpc,matt-kwong/grpc,PeterFaiman/ruby-grpc-minimal,podsvirov/grpc,podsvirov/grpc,LuminateWireless/grpc,kumaralokgithub/grpc,pszemus/grpc,wangyikai/grpc,gpndata/grpc,donnadionne/grpc,tamihiro/grpc,VcamX/grpc,yinsu/grpc,vjpai/grpc,daniel-j-born/grpc,fichter/grpc,yang-g/grpc,makdharma/grpc,ncteisen/grpc,grpc/grpc,murgatroid99/grpc,ncteisen/grpc,msiedlarek/grpc,xtopsoft/grpc,msmania/grpc,a11r/grpc,sreecha/grpc,podsvirov/grpc,soltanmm/grpc,bjori/grpc,miselin/grpc,jcanizales/grpc,kpayson64/grpc,vsco/grpc,Vizerai/grpc,wangyikai/grpc,ncteisen/grpc,msmania/grpc,kriswuollett/grpc,podsvirov/grpc,nicolasnoble/grpc,msiedlarek/grpc,makdharma/grpc,a11r/grpc,kskalski/grpc,firebase/grpc,ananthonline/grpc,MakMukhi/grpc,bogdandrutu/grpc,kriswuollett/grpc,philcleveland/grpc,thinkerou/grpc,wcevans/grpc,andrewpollock/grpc,muxi/grpc,kumaralokgithub/grpc,ofrobots/grpc,fuchsia-mirror/third_party-grpc,maxwell-demon/grpc,xtopsoft/grpc,hstefan/grpc,nicolasnoble/grpc,pszemus/grpc,dklempner/grpc,bjori/grpc,JoeWoo/grpc,firebase/grpc,goldenbull/grpc,w4-sjcho/grpc,w4-sjcho/grpc,wangyikai/grpc,hstefan/grpc,murgatroid99/grpc,soltanmm/grpc,firebase/grpc,larsonmpdx/grpc,donnadionne/grpc,vsco/grpc,sidrakesh93/grpc,vjpai/grpc,sidrakesh93/grpc,royalharsh/grpc,tamihiro/grpc,tempbottle/grpc,ejona86/grpc,yang-g/grpc,sreecha/grpc,msiedlarek/grpc,chrisdunelm/grpc,perumaalgoog/grpc,baylabs/grpc,fuchsia-mirror/third_party-grpc,wcevans/grpc,daniel-j-born/grpc,nicolasnoble/grpc,msiedlarek/grpc,kskalski/grpc,sreecha/grpc,dgquintas/grpc,ananthonline/grpc,yinsu/grpc,rjshade/grpc,nicolasnoble/grpc,Vizerai/grpc,firebase/grpc,geffzhang/grpc,jboeuf/grpc,matt-kwong/grpc,malexzx/grpc,goldenbull/grpc,msmania/grpc,tamihiro/grpc,stanley-cheung/grpc,ctiller/grpc,tengyifei/grpc,thinkerou/grpc,PeterFaiman/ruby-grpc-minimal,ncteisen/grpc,soltanmm-google/grpc,zhimingxie/grpc,firebase/grpc,vjpai/grpc,kskalski/grpc,leifurhauks/grpc,dgquintas/grpc,xtopsoft/grpc,perumaalgoog/grpc,ofrobots/grpc,bjori/grpc,soltanmm/grpc,podsvirov/grpc,grpc/grpc,kpayson64/grpc,donnadionne/grpc,zhimingxie/grpc,sreecha/grpc,a-veitch/grpc,muxi/grpc,daniel-j-born/grpc,philcleveland/grpc,fuchsia-mirror/third_party-grpc,chrisdunelm/grpc,ctiller/grpc,yongni/grpc,thunderboltsid/grpc,bjori/grpc,adelez/grpc,grpc/grpc,apolcyn/grpc,w4-sjcho/grpc,kriswuollett/grpc,Crevil/grpc,madongfly/grpc,leifurhauks/grpc,pmarks-net/grpc,tengyifei/grpc,thinkerou/grpc,rjshade/grpc,murgatroid99/grpc,larsonmpdx/grpc,makdharma/grpc,wangyikai/grpc,Vizerai/grpc,LuminateWireless/grpc,w4-sjcho/grpc,jtattermusch/grpc,wcevans/grpc,ananthonline/grpc,bogdandrutu/grpc,ejona86/grpc,dgquintas/grpc,nicolasnoble/grpc,bogdandrutu/grpc,rjshade/grpc,tengyifei/grpc,apolcyn/grpc,kriswuollett/grpc,a-veitch/grpc,daniel-j-born/grpc,quizlet/grpc,yugui/grpc,philcleveland/grpc,larsonmpdx/grpc,madongfly/grpc,MakMukhi/grpc,surround-io/grpc,adelez/grpc,zhimingxie/grpc,y-zeng/grpc,7anner/grpc,ppietrasa/grpc,miselin/grpc,fuchsia-mirror/third_party-grpc,JoeWoo/grpc,Vizerai/grpc,leifurhauks/grpc,cgvarela/grpc,crast/grpc,pmarks-net/grpc,ppietrasa/grpc,ejona86/grpc,soltanmm-google/grpc,a-veitch/grpc,infinit/grpc,bjori/grpc,tempbottle/grpc,grpc/grpc,tamihiro/grpc,simonkuang/grpc,muxi/grpc,doubi-workshop/grpc,w4-sjcho/grpc,thinkerou/grpc,ctiller/grpc,xtopsoft/grpc,jtattermusch/grpc,malexzx/grpc,kriswuollett/grpc,malexzx/grpc,ejona86/grpc,kriswuollett/grpc,vjpai/grpc,surround-io/grpc,soltanmm-google/grpc,doubi-workshop/grpc,jtattermusch/grpc,msiedlarek/grpc,andrewpollock/grpc,perumaalgoog/grpc,quizlet/grpc,thinkerou/grpc,zhimingxie/grpc,JoeWoo/grpc,msmania/grpc,larsonmpdx/grpc,larsonmpdx/grpc,mehrdada/grpc,ofrobots/grpc,quizlet/grpc,ejona86/grpc,kpayson64/grpc,grpc/grpc,andrewpollock/grpc,zhimingxie/grpc,simonkuang/grpc,Vizerai/grpc,surround-io/grpc,pszemus/grpc,y-zeng/grpc,LuminateWireless/grpc,arkmaxim/grpc,ananthonline/grpc,murgatroid99/grpc,LuminateWireless/grpc,carl-mastrangelo/grpc,fuchsia-mirror/third_party-grpc,meisterpeeps/grpc,jcanizales/grpc,muxi/grpc,adelez/grpc,jtattermusch/grpc,a11r/grpc,dklempner/grpc,makdharma/grpc,yang-g/grpc,ctiller/grpc,jboeuf/grpc,madongfly/grpc,yongni/grpc,deepaklukose/grpc,kumaralokgithub/grpc,VcamX/grpc,royalharsh/grpc,ncteisen/grpc,baylabs/grpc,jboeuf/grpc,hstefan/grpc,quizlet/grpc,jboeuf/grpc,thunderboltsid/grpc,y-zeng/grpc,madongfly/grpc,carl-mastrangelo/grpc,stanley-cheung/grpc,sidrakesh93/grpc,y-zeng/grpc,fuchsia-mirror/third_party-grpc,simonkuang/grpc,LuminateWireless/grpc,chrisdunelm/grpc,matt-kwong/grpc,grani/grpc,grpc/grpc,madongfly/grpc,matt-kwong/grpc,thinkerou/grpc,larsonmpdx/grpc,baylabs/grpc,deepaklukose/grpc,matt-kwong/grpc,philcleveland/grpc,vsco/grpc,perumaalgoog/grpc,ksophocleous/grpc,cgvarela/grpc,deepaklukose/grpc,jtattermusch/grpc,a-veitch/grpc,carl-mastrangelo/grpc,ncteisen/grpc,thunderboltsid/grpc,tamihiro/grpc,pszemus/grpc,baylabs/grpc,yang-g/grpc,podsvirov/grpc,arkmaxim/grpc,sreecha/grpc,yugui/grpc,fichter/grpc,ipylypiv/grpc,VcamX/grpc,yongni/grpc,philcleveland/grpc,fichter/grpc,andrewpollock/grpc,yang-g/grpc,soltanmm/grpc,pszemus/grpc,crast/grpc,meisterpeeps/grpc,a-veitch/grpc,madongfly/grpc,LuminateWireless/grpc,andrewpollock/grpc,yongni/grpc,maxwell-demon/grpc,kskalski/grpc,VcamX/grpc,ofrobots/grpc,ksophocleous/grpc,firebase/grpc,goldenbull/grpc,pmarks-net/grpc,mehrdada/grpc,VcamX/grpc,tengyifei/grpc,Vizerai/grpc,xtopsoft/grpc,gpndata/grpc,yinsu/grpc,grani/grpc,soltanmm/grpc,yugui/grpc,meisterpeeps/grpc,maxwell-demon/grpc,kpayson64/grpc,fuchsia-mirror/third_party-grpc,sidrakesh93/grpc,grani/grpc,muxi/grpc,kumaralokgithub/grpc,Crevil/grpc,kpayson64/grpc,sreecha/grpc,larsonmpdx/grpc,quizlet/grpc,jcanizales/grpc,perumaalgoog/grpc,mehrdada/grpc,rjshade/grpc,ctiller/grpc,msiedlarek/grpc,w4-sjcho/grpc,doubi-workshop/grpc,dgquintas/grpc,greasypizza/grpc,grpc/grpc,tengyifei/grpc,soltanmm/grpc,arkmaxim/grpc,geffzhang/grpc,carl-mastrangelo/grpc,pszemus/grpc,jboeuf/grpc,wcevans/grpc,dklempner/grpc,infinit/grpc,tengyifei/grpc,carl-mastrangelo/grpc,chrisdunelm/grpc,gpndata/grpc,msiedlarek/grpc,soltanmm/grpc,goldenbull/grpc,malexzx/grpc,infinit/grpc,ksophocleous/grpc,meisterpeeps/grpc,grpc/grpc,VcamX/grpc,zhimingxie/grpc,jboeuf/grpc,firebase/grpc,Vizerai/grpc,tempbottle/grpc,perumaalgoog/grpc,simonkuang/grpc,carl-mastrangelo/grpc,ctiller/grpc,thinkerou/grpc,yinsu/grpc,soltanmm-google/grpc,msmania/grpc,ejona86/grpc,goldenbull/grpc,yinsu/grpc,ksophocleous/grpc,7anner/grpc,soltanmm-google/grpc,simonkuang/grpc,wcevans/grpc,MakMukhi/grpc,stanley-cheung/grpc,muxi/grpc,kpayson64/grpc,apolcyn/grpc,yang-g/grpc,jtattermusch/grpc,gpndata/grpc,chrisdunelm/grpc,ipylypiv/grpc,rjshade/grpc,tempbottle/grpc,nicolasnoble/grpc,baylabs/grpc,vjpai/grpc,dklempner/grpc,ncteisen/grpc,leifurhauks/grpc,PeterFaiman/ruby-grpc-minimal,surround-io/grpc,Crevil/grpc,madongfly/grpc,wcevans/grpc,andrewpollock/grpc,infinit/grpc,xtopsoft/grpc,yang-g/grpc,leifurhauks/grpc,thunderboltsid/grpc,hstefan/grpc,jboeuf/grpc,muxi/grpc,mehrdada/grpc,7anner/grpc,infinit/grpc,jcanizales/grpc,yongni/grpc,perumaalgoog/grpc,bjori/grpc,grani/grpc,simonkuang/grpc,LuminateWireless/grpc,bogdandrutu/grpc,bjori/grpc,y-zeng/grpc,dgquintas/grpc,dgquintas/grpc,surround-io/grpc,miselin/grpc,stanley-cheung/grpc,ejona86/grpc,ncteisen/grpc,rjshade/grpc,maxwell-demon/grpc,greasypizza/grpc,wangyikai/grpc,pmarks-net/grpc,chrisdunelm/grpc,meisterpeeps/grpc,ipylypiv/grpc,nicolasnoble/grpc,crast/grpc,yugui/grpc,mehrdada/grpc,kumaralokgithub/grpc,maxwell-demon/grpc,vsco/grpc,ofrobots/grpc,makdharma/grpc,baylabs/grpc,stanley-cheung/grpc,a-veitch/grpc,makdharma/grpc,hstefan/grpc,dgquintas/grpc,soltanmm/grpc,JoeWoo/grpc,greasypizza/grpc,vjpai/grpc,greasypizza/grpc,bogdandrutu/grpc,malexzx/grpc,tempbottle/grpc,jboeuf/grpc,bogdandrutu/grpc,deepaklukose/grpc,firebase/grpc,fichter/grpc,daniel-j-born/grpc,kumaralokgithub/grpc,ipylypiv/grpc,soltanmm/grpc,goldenbull/grpc,yugui/grpc,madongfly/grpc,quizlet/grpc,thinkerou/grpc,carl-mastrangelo/grpc,ncteisen/grpc,a11r/grpc,mehrdada/grpc,adelez/grpc,7anner/grpc,apolcyn/grpc,ctiller/grpc,ipylypiv/grpc,tamihiro/grpc,ksophocleous/grpc,jtattermusch/grpc,ppietrasa/grpc,msiedlarek/grpc,thunderboltsid/grpc,cgvarela/grpc,vjpai/grpc,ejona86/grpc,hstefan/grpc,ksophocleous/grpc,kpayson64/grpc,mehrdada/grpc,MakMukhi/grpc,vsco/grpc,a11r/grpc,ananthonline/grpc,royalharsh/grpc,thinkerou/grpc,carl-mastrangelo/grpc,kskalski/grpc,nicolasnoble/grpc,yongni/grpc,geffzhang/grpc,meisterpeeps/grpc,apolcyn/grpc,pszemus/grpc,firebase/grpc,apolcyn/grpc,tamihiro/grpc,Vizerai/grpc,miselin/grpc,thunderboltsid/grpc,stanley-cheung/grpc,ipylypiv/grpc,muxi/grpc,larsonmpdx/grpc,chrisdunelm/grpc,wcevans/grpc,soltanmm-google/grpc,carl-mastrangelo/grpc,donnadionne/grpc,grani/grpc