response = new ResponseEntity<MyDto>(myDto, myHeaders, HttpStatus.OK);

response = ResponseEntity.ok().headers(myHeaders).body(myDto);

// constructor
MultiValueMap<String, String> headers = ...;
ResponseEntity<String> resp = new ResponseEntity(headers, HttpStatus.OK);

// builder
ResponseEntity<String> resp = ResponseEntity.ok()
    .header("header1", "value1")
    .header("header2", "value2")
    .build();