getArg method
Implementation
BuildFactory getArg(Type t) {
assert(_factorys.containsKey(t), 'You need to call put<$t>().');
return _factorys[t] as BuildFactory;
}
BuildFactory getArg(Type t) {
assert(_factorys.containsKey(t), 'You need to call put<$t>().');
return _factorys[t] as BuildFactory;
}