Swagger CodeGen APIClient.java not returning the headers from the rest response by calling resttemplate

[ghost]

Description

Swagger CodeGen APIClient.java not returning the headers from the rest response by calling resttemplate
It is returning only the response body. Please have a look into this.

Swagger-codegen version

2.4.5

Swagger declaration file content or url

addHeadersToRequest(headerParams, requestBuilder);
addHeadersToRequest(defaultHeaders, requestBuilder);

    RequestEntity<Object> requestEntity = requestBuilder.body(selectBody(body, formParams, contentType));

    ResponseEntity<T> responseEntity = restTemplate.exchange(requestEntity, returnType);
    
    statusCode = responseEntity.getStatusCode();
    responseHeaders = responseEntity.getHeaders();

    if (responseEntity.getStatusCode() == HttpStatus.NO_CONTENT) {
        return null;
    } else if (responseEntity.getStatusCode().is2xxSuccessful()) {
        if (returnType == null) {
            return null;
        }
        return responseEntity.getBody();

[thomasJoei]

Created a PR for this fix.
#9737