| library; | 
 | import self as self; | 
 | import "dart:core" as core; | 
 |  | 
 | static const field core::Map<core::String, dynamic> generatorConfigDefaultJson = #C3; | 
 | static method helper(core::Map<core::String, dynamic> input) → void { | 
 |   core::print(input); | 
 | } | 
 | static method main() → void { | 
 |   final core::Map<core::String, Null> nullValueMap = core::Map::fromEntries<core::String, Null>(#C3.{core::Map::entries}{core::Iterable<core::MapEntry<core::String, dynamic>>}.{core::Iterable::map}<core::MapEntry<core::String, Null>>((core::MapEntry<core::String, dynamic> e) → core::MapEntry<core::String, Null> => new core::MapEntry::_<core::String, Null>(e.{core::MapEntry::key}{core::String}, null)){((core::MapEntry<core::String, dynamic>) → core::MapEntry<core::String, Null>) → core::Iterable<core::MapEntry<core::String, Null>>}); | 
 |   self::helper(nullValueMap); | 
 | } | 
 |  | 
 | constants  { | 
 |   #C1 = "a" | 
 |   #C2 = 1 | 
 |   #C3 = <core::String*, dynamic>{#C1:#C2} | 
 | } |