HttpMessageConverterExtractor (v. 5.3.22) not respecting response class / responds type of VaultResponses

spring cloud version: 2021.0.3
spring version: 2.7.3 (Spring boot starter)

the vault library doesn't seem to be respecting the response type as it passes it in to HttpMessageConverterExtractor
internally.

** note** please look at the screenshots of my debugger - you will see that HttpMessageConverterExtractor cannot properly parse VaultResponses

Ex:

public class SomeClass {
}

@SpringBootApplication
public class VaultdebugApplication {
	@Bean void createBean() {
		List<HttpMessageConverter<?>> messageConverters = new ArrayList<>();
		messageConverters.add(new ByteArrayHttpMessageConverter());
		messageConverters.add(new StringHttpMessageConverter());
		messageConverters.add(new ResourceHttpMessageConverter(false));
		HttpMessageConverterExtractor x = new HttpMessageConverterExtractor(SomeClass.class, messageConverters);
	}
	public static void main(String[] args) {
		SpringApplication.run(VaultdebugApplication.class, args);
	}
}

the above works - HttpMessageConverterExtractor recognizes SomeClass.class as the response type one I trace it through the debugger.

however - when I try to read a secret from a vault Versioned backend (kv2) for whatever reason running the debugger at that same place shows that HttpMessageConverterExtractor will not recognize SomeClass.class.

@SpringBootApplication
public class VaultdebugApplication {
	@Bean
	public Secrets secrets(VaultTemplate operations) {
		VaultResponseSupport<SomeClass> response = operations.read("some/vault/path", SomeClass.class);
		System.out.println(response.getRequiredData()); // results in null
		System.out.println(response.getData()); // results in null

		return null;
	}
	public static void main(String[] args) {
		SpringApplication.run(VaultdebugApplication.class, args);
	}
}

in fact you can even see that - whatever is passed into Type responseType field isn't a class but an instance of VaultResponses.

从 VaultTemplate.read(..., SomeClass.class)、VaultResponseSupport 以及报告中所示的 HttpMessageConverterExtractor 调用开始；在 Vault KV2 后端上复现该问题，并检查传递给 extractor 的 responseType。跟踪现有的响应转换测试，并添加覆盖范围以表明请求的类得以保留且其数据已填充。