public List<SelectorDTO> listAllSelectors() {
        SelectorQueryCondition condition = SelectorQueryCondition.builder()
                .switchStatus(true)
                .build();
        return list("/selector/list/search", condition, SEARCHED_SELECTORS_TYPE_REFERENCE, v -> v);
    }
List all existence selectors.

@return a list of {@link SelectorDTO}s
shenyu-e2e/shenyu-e2e-client/src/main/java/org/apache/shenyu/e2e/client/admin/AdminClient.java