Reduce complexity in ExtraSpacing
Reduce complexity in ExtraSpacing

Extract `assignment_tokens` from `investigate`.

sue445/rubocop,scottmatthewman/rubocop,haziqhafizuddin/rubocop,savef/rubocop,maxjacobson/rubocop,mclark/rubocop,tejasbubane/rubocop,alexcstark/rubocop,panthomakos/rubocop,smakagon/rubocop,NobodysNightmare/rubocop,bbatsov/rubocop,iGEL/rubocop,tdeo/rubocop,petehamilton/rubocop,iGEL/rubocop,deivid-rodriguez/rubocop,palkan/rubocop,sinsoku/rubocop,ilansh/rubocop,rrosenblum/rubocop,ilansh/rubocop,smakagon/rubocop,jmks/rubocop,bankair/rubocop,lumeet/rubocop,meganemura/rubocop,meganemura/rubocop,mikegee/rubocop,palkan/rubocop,b-t-g/rubocop,melch/rubocop,backus/rubocop,Drenmi/rubocop,meganemura/rubocop,vergenzt/rubocop,bquorning/rubocop,palkan/rubocop,lumeet/rubocop,akihiro17/rubocop,lucasuyezu/rubocop,jmks/rubocop,bbatsov/rubocop,maxjacobson/rubocop,jfelchner/rubocop,akihiro17/rubocop,bankair/rubocop,bquorning/rubocop,jfelchner/rubocop,jfelchner/rubocop,mikegee/rubocop,panthomakos/rubocop,pocke/rubocop,vergenzt/rubocop,akihiro17/rubocop,lucasuyezu/rubocop,legendetm/rubocop,vergenzt/rubocop,urbanautomaton/rubocop,Drenmi/rubocop,mikegee/rubocop,legendetm/rubocop,jmks/rubocop,deivid-rodriguez/rubocop,rtlechow/rubocop,pocke/rubocop,mclark/rubocop,alexdowad/rubocop,dreyks/rubocop,tejasbubane/rubocop,rrosenblum/rubocop,maxjacobson/rubocop,petehamilton/rubocop,petehamilton/rubocop,melch/rubocop,hanumakanthvvn/rubocop,deivid-rodriguez/rubocop,haziqhafizuddin/rubocop,savef/rubocop,alexcstark/rubocop,urbanautomaton/rubocop,sue445/rubocop,tejasbubane/rubocop,bquorning/rubocop,tdeo/rubocop,tdeo/rubocop,dreyks/rubocop,b-t-g/rubocop,rtlechow/rubocop,backus/rubocop,hanumakanthvvn/rubocop,sue445/rubocop,alexdowad/rubocop,rrosenblum/rubocop,NobodysNightmare/rubocop,scottmatthewman/rubocop,sinsoku/rubocop,panthomakos/rubocop