Errors: {
}
method /* from org-dartlang-debug:synthetic_debug_expression */ debugExpr() → dynamic
  return () → dart.core::int* {
    return this.{main::B::x}{dart.core::int*}.{dart.core::num::+}(this.{main::B::y}{dart.core::int*}){(dart.core::num*) →* dart.core::int*};
  };