Add missing @raise tag for Engine#base_relation
Add missing @raise tag for Engine#base_relation

pvcarrera/rom,rom-rb/rom,pxlpnk/rom,pdswan/rom,cored/rom,rom-rb/rom,denyago/rom,vrish88/rom,dcarral/rom,rom-rb/rom,endash/rom,kwando/rom,dekz/rom,jeremyf/rom,Snuff/rom