library;
import self as self;
import "dart:core" as core;

static method test(dynamic x) → dynamic {
  #L1:
  {
    final synthesized dynamic #0#0 = x;
    {
      if(#0#0 is (core::Object?) && #C1 =={core::num::==}{(core::Object) → core::bool} #0#0{(core::Object?)}.$1{core::Object?}) {
        {
          break #L1;
        }
      }
    }
  }
}

constants  {
  #C1 = 1
}