|  | library; | 
|  | import self as self; | 
|  | import "dart:core" as core; | 
|  |  | 
|  | static method test(dynamic x) → dynamic { | 
|  | #L1: | 
|  | { | 
|  | final synthesized dynamic #0#0 = x; | 
|  | synthesized core::Object? #0#5; | 
|  | synthesized core::bool #0#5#isSet = false; | 
|  | { | 
|  | if(let final dynamic #t1 = #0#0 as core::Object in (#0#0 as core::Object) is core::Map<core::Object?, core::Object?> && (!((#0#5#isSet ?{core::Object?} #0#5{core::Object?} : let final dynamic #t2 = #0#5#isSet = true in #0#5 = ((#0#0 as core::Object) as{Unchecked} core::Map<core::Object?, core::Object?>).{core::Map::[]}(#C1){(core::Object?) → core::Object?}) == null) || null is core::Object? && ((#0#0 as core::Object) as{Unchecked} core::Map<core::Object?, core::Object?>).{core::Map::containsKey}(#C1){(core::Object?) → core::bool}) && #C2 =={core::num::==}{(core::Object) → core::bool} (#0#5#isSet ?{core::Object?} #0#5{core::Object?} : let final dynamic #t3 = #0#5#isSet = true in #0#5 = ((#0#0 as core::Object) as{Unchecked} core::Map<core::Object?, core::Object?>).{core::Map::[]}(#C1){(core::Object?) → core::Object?})) { | 
|  | { | 
|  | break #L1; | 
|  | } | 
|  | } | 
|  | } | 
|  | } | 
|  | } | 
|  |  | 
|  | constants  { | 
|  | #C1 = "a" | 
|  | #C2 = 1 | 
|  | } |