Add nullability to the primitive value
Add nullability to the primitive value

A defined attribute can be nullable, so the getter and setter of the primitive should consider nullable
VladimirGoncharov/mogenerator,bewebste/mogenerator,Erin-Mounts/mogenerator,rentzsch/mogenerator,hardikdevios/mogenerator,VladimirGoncharov/mogenerator,rentzsch/mogenerator,Erin-Mounts/mogenerator,hardikdevios/mogenerator,hardikdevios/mogenerator,Erin-Mounts/mogenerator,bewebste/mogenerator,VladimirGoncharov/mogenerator,bewebste/mogenerator,rentzsch/mogenerator,bewebste/mogenerator