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The process to transform Mono<pojoresponseobject> into a Mono<responseentity> by utilizing webclient involves the following steps:

1. Create a WebClient object using the builder() method.
2. Use the WebClient object to make a request to the endpoint that returns Mono<pojoresponseobject>.
3. Use the retrieve() method to obtain the response body as a Mono<pojoresponseobject>.
4. Define the HttpStatus code for the ResponseEntity. This is typically done using the status() method on ResponseEntity.
5. Use the map() method to convert the Mono<pojoresponseobject> into a Mono<responseentity>.
6. In the map() method, create a new ResponseEntity object using the ResponseBody and HTTPStatus of the original Mono<pojoresponseobject>.
7. Return the new Mono<responseentity>.

Here's some example code to demonstrate:

WebClient webClient = WebClient.builder().baseUrl("http://example.com").build();

Mono<PojoResponseObject> pojoResponseMono = webClient.get()
    .uri("/api/my-endpoint")
    .retrieve()
    .bodyToMono(PojoResponseObject.class);

Mono<ResponseEntity<PojoResponseObject>> responseEntityMono = pojoResponseMono
    .map(responseBody -> ResponseEntity.status(HttpStatus.OK).body(responseBody));

// You can subscribe to this final result, or return it from a Controller endpoint method
responseEntityMono.subscribe(System.out::println);