Make sure raise error if you try to overwrite field name that is already defined in Object#185
Open
harada4atsushi wants to merge 2 commits intoactive-hash:masterfrom
Open
Make sure raise error if you try to overwrite field name that is already defined in Object#185harada4atsushi wants to merge 2 commits intoactive-hash:masterfrom
harada4atsushi wants to merge 2 commits intoactive-hash:masterfrom
