NullableFieldVisitor(String fieldName) {
            super(AsmConstants.ASM_LEVEL)
            this.fieldName = fieldName
        }

        @Override
        FieldVisitor visitField(int access, String name, String fieldDescriptor, String signature, Object value) {
            if (fieldName == name) {
                return new FieldVisitor(AsmConstants.ASM_LEVEL) {
                    @Override