Improve documentation for Set/CopyIfFieldExists
Improve documentation for Set/CopyIfFieldExists

ipa-rmb/pcl,stefanbuettner/pcl,simonleonard/pcl,DaikiMaekawa/pcl,wgapl/pcl,soulsheng/pcl,fanxiaochen/mypcltest,damienjadeduff/pcl,shivmalhotra/pcl,nikste/pcl,damienjadeduff/pcl,cascheberg/pcl,drmateo/pcl,srbhprajapati/pcl,raydtang/pcl,shivmalhotra/pcl,lydhr/pcl,mschoeler/pcl,closerbibi/pcl,lydhr/pcl,3dtof/pcl,Tabjones/pcl,mschoeler/pcl,DaikiMaekawa/pcl,simonleonard/pcl,ipa-rmb/pcl,zhangxaochen/pcl,sbec/pcl,stfuchs/pcl,zhangxaochen/pcl,drmateo/pcl,pkuhto/pcl,mschoeler/pcl,damienjadeduff/pcl,raydtang/pcl,chatchavan/pcl,lebronzhang/pcl,msalvato/pcl_kinfu_highres,krips89/pcl_newfeatures,LZRS/pcl,msalvato/pcl_kinfu_highres,raydtang/pcl,KevenRing/vlp,drmateo/pcl,closerbibi/pcl,zavataafnan/pcl-truck,chenxingzhe/pcl,KevenRing/pcl,jeppewalther/kinfu_segmentation,lebronzhang/pcl,raydtang/pcl,lydhr/pcl,Tabjones/pcl,LZRS/pcl,krips89/pcl_newfeatures,drmateo/pcl,msalvato/pcl_kinfu_highres,wgapl/pcl,Tabjones/pcl,MMiknis/pcl,lydhr/pcl,nikste/pcl,shyamalschandra/pcl,ResByte/pcl,starius/pcl,chatchavan/pcl,cascheberg/pcl,3dtof/pcl,chatchavan/pcl,shangwuhencc/pcl,nikste/pcl,KevenRing/vlp,starius/pcl,ipa-rmb/pcl,the-glu/pcl,pkuhto/pcl,drmateo/pcl,kanster/pcl,fskuka/pcl,closerbibi/pcl,simonleonard/pcl,stfuchs/pcl,soulsheng/pcl,the-glu/pcl,cascheberg/pcl,closerbibi/pcl,pkuhto/pcl,shivmalhotra/pcl,v4hn/pcl,shangwuhencc/pcl,shangwuhencc/pcl,mikhail-matrosov/pcl,locnx1984/pcl,stefanbuettner/pcl,shyamalschandra/pcl,RufaelDev/pcc-mp3dg,mschoeler/pcl,mikhail-matrosov/pcl,mikhail-matrosov/pcl,pkuhto/pcl,fanxiaochen/mypcltest,kanster/pcl,v4hn/pcl,mikhail-matrosov/pcl,MMiknis/pcl,ResByte/pcl,ipa-rmb/pcl,stfuchs/pcl,zavataafnan/pcl-truck,starius/pcl,shyamalschandra/pcl,KevenRing/vlp,kanster/pcl,locnx1984/pcl,shivmalhotra/pcl,MMiknis/pcl,jeppewalther/kinfu_segmentation,LZRS/pcl,wgapl/pcl,RufaelDev/pcc-mp3dg,chatchavan/pcl,zavataafnan/pcl-truck,RufaelDev/pcc-mp3dg,fskuka/pcl,fskuka/pcl,jeppewalther/kinfu_segmentation,KevenRing/pcl,simonleonard/pcl,KevenRing/pcl,fanxiaochen/mypcltest,stfuchs/pcl,cascheberg/pcl,zhangxaochen/pcl,Tabjones/pcl,damienjadeduff/pcl,lebronzhang/pcl,Tabjones/pcl,ResByte/pcl,shangwuhencc/pcl,ResByte/pcl,srbhprajapati/pcl,KevenRing/vlp,cascheberg/pcl,the-glu/pcl,DaikiMaekawa/pcl,MMiknis/pcl,srbhprajapati/pcl,3dtof/pcl,v4hn/pcl,closerbibi/pcl,zhangxaochen/pcl,nikste/pcl,wgapl/pcl,chenxingzhe/pcl,KevenRing/vlp,RufaelDev/pcc-mp3dg,LZRS/pcl,DaikiMaekawa/pcl,zhangxaochen/pcl,soulsheng/pcl,chenxingzhe/pcl,the-glu/pcl,jeppewalther/kinfu_segmentation,RufaelDev/pcc-mp3dg,lydhr/pcl,MMiknis/pcl,simonleonard/pcl,fanxiaochen/mypcltest,krips89/pcl_newfeatures,kanster/pcl,jakobwilm/pcl,chenxingzhe/pcl,krips89/pcl_newfeatures,shangwuhencc/pcl,zavataafnan/pcl-truck,srbhprajapati/pcl,jakobwilm/pcl,3dtof/pcl,shyamalschandra/pcl,kanster/pcl,fskuka/pcl,v4hn/pcl,nikste/pcl,mschoeler/pcl,jakobwilm/pcl,stefanbuettner/pcl,mikhail-matrosov/pcl,starius/pcl,stfuchs/pcl,lebronzhang/pcl,the-glu/pcl,zavataafnan/pcl-truck,jakobwilm/pcl,soulsheng/pcl,locnx1984/pcl,stefanbuettner/pcl,starius/pcl,sbec/pcl,srbhprajapati/pcl,ipa-rmb/pcl,KevenRing/pcl,fanxiaochen/mypcltest,raydtang/pcl,stefanbuettner/pcl,chenxingzhe/pcl,shyamalschandra/pcl,msalvato/pcl_kinfu_highres,sbec/pcl,DaikiMaekawa/pcl,locnx1984/pcl,msalvato/pcl_kinfu_highres,soulsheng/pcl,lebronzhang/pcl,KevenRing/pcl,damienjadeduff/pcl,jeppewalther/kinfu_segmentation,wgapl/pcl,shivmalhotra/pcl,v4hn/pcl,LZRS/pcl,3dtof/pcl,pkuhto/pcl,locnx1984/pcl,ResByte/pcl,jakobwilm/pcl,krips89/pcl_newfeatures,sbec/pcl,fskuka/pcl,sbec/pcl