anchor.diff:    BoolState lazyEqualEqual(
       TypeSystemImpl typeSystem,
       InstanceState rightOperand,
  -  );
  +  ) {
  +    return isIdentical(typeSystem, rightOperand);
  +  }
   
     /// Return the result of invoking the '||' operator on this object with the
     /// [rightOperand].
  
positive.code:       return BoolState.from(rightValue == value.toDouble());
      }
      return BoolState.FALSE_STATE;
    }
  
    @override
    BoolState lazyEqualEqual(
      TypeSystemImpl typeSystem,
      InstanceState rightOperand,
    ) {
      return isIdentical(typeSystem, rightOperand);
    }
  
    @override
  
negative.code:       return BoolState.from(_element == rightElement);
      }
      return BoolState.FALSE_STATE;
    }
  
    @override
  