lookup method

int? lookup(dynamic o$2)

Implementation

dc.int? lookup(dc.dynamic o$2, ){
final dc.int? or$7505_$AUTO_$1=(young[o$2]);
if((or$7505_$AUTO_$1!=null)){
return or$7505_$AUTO_$1;
}
final dc.int? some$7478_$AUTO_$1=(old[o$2]);
if((null==some$7478_$AUTO_$1)){
return null;
}
final dc.int h$2=(some$7478_$AUTO_$1 as dc.int);
this.insert(o$2, h$2, );
return h$2;
}